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Finding the Fourth Proportional to 3,009.98, 4,514.99 and 818.71

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Solution

The fourth proportional to 3,009.98, 4,514.99 and 818.71 is: 1,228.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.98 : 4,514.99 = 818.71 : x
  2. Step 2: Convert to fraction form
    3,009.98/4,514.99 = 818.71/x
  3. Step 3: Cross multiply
    3,009.98x = 4,514.99 × 818.71
  4. Step 4: Simplify right side
    3,009.98x = 3,696,467.46
  5. Step 5: Solve for x
    x = 3,696,467.46/3,009.98
  6. Step 6: Final answer
    x = 1,228.07

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,010.98, 4,516.49 and 819.71
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.