Home / 3,864.36-5,331.42-2,538.78

Finding the Fourth Proportional to 3,864.36, 5,331.42 and 2,538.78

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Solution

The fourth proportional to 3,864.36, 5,331.42 and 2,538.78 is: 3,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864.36 : 5,331.42 = 2,538.78 : x
  2. Step 2: Convert to fraction form
    3,864.36/5,331.42 = 2,538.78/x
  3. Step 3: Cross multiply
    3,864.36x = 5,331.42 × 2,538.78
  4. Step 4: Simplify right side
    3,864.36x = 13,535,302.47
  5. Step 5: Solve for x
    x = 13,535,302.47/3,864.36
  6. Step 6: Final answer
    x = 3,502.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.