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Finding the Fourth Proportional to 3,048.51, 4,572.87 and 857.19

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Solution

The fourth proportional to 3,048.51, 4,572.87 and 857.19 is: 1,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,048.51 : 4,572.87 = 857.19 : x
  2. Step 2: Convert to fraction form
    3,048.51/4,572.87 = 857.19/x
  3. Step 3: Cross multiply
    3,048.51x = 4,572.87 × 857.19
  4. Step 4: Simplify right side
    3,048.51x = 3,919,818.44
  5. Step 5: Solve for x
    x = 3,919,818.44/3,048.51
  6. Step 6: Final answer
    x = 1,285.81

Related Problems

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Half scale
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Double scale
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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.