Home / 2,472.78-3,412.38-1,424.88

Finding the Fourth Proportional to 2,472.78, 3,412.38 and 1,424.88

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Solution

The fourth proportional to 2,472.78, 3,412.38 and 1,424.88 is: 1,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,472.78 : 3,412.38 = 1,424.88 : x
  2. Step 2: Convert to fraction form
    2,472.78/3,412.38 = 1,424.88/x
  3. Step 3: Cross multiply
    2,472.78x = 3,412.38 × 1,424.88
  4. Step 4: Simplify right side
    2,472.78x = 4,862,232.01
  5. Step 5: Solve for x
    x = 4,862,232.01/2,472.78
  6. Step 6: Final answer
    x = 1,966.30

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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.