Home / 3,048.40-4,572.58-857.07

Finding the Fourth Proportional to 3,048.40, 4,572.58 and 857.07

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Solution

The fourth proportional to 3,048.40, 4,572.58 and 857.07 is: 1,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,048.40 : 4,572.58 = 857.07 : x
  2. Step 2: Convert to fraction form
    3,048.40/4,572.58 = 857.07/x
  3. Step 3: Cross multiply
    3,048.40x = 4,572.58 × 857.07
  4. Step 4: Simplify right side
    3,048.40x = 3,919,021.14
  5. Step 5: Solve for x
    x = 3,919,021.14/3,048.40
  6. Step 6: Final answer
    x = 1,285.60

Related Problems

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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.