Home / 2,572.48-3,858.40-929.12

Finding the Fourth Proportional to 2,572.48, 3,858.40 and 929.12

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Solution

The fourth proportional to 2,572.48, 3,858.40 and 929.12 is: 1,393.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.48 : 3,858.40 = 929.12 : x
  2. Step 2: Convert to fraction form
    2,572.48/3,858.40 = 929.12/x
  3. Step 3: Cross multiply
    2,572.48x = 3,858.40 × 929.12
  4. Step 4: Simplify right side
    2,572.48x = 3,584,916.61
  5. Step 5: Solve for x
    x = 3,584,916.61/2,572.48
  6. Step 6: Final answer
    x = 1,393.56

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,573.48, 3,859.90 and 930.12
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.