Home / 2,428.72-3,642.30-784.92

Finding the Fourth Proportional to 2,428.72, 3,642.30 and 784.92

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Solution

The fourth proportional to 2,428.72, 3,642.30 and 784.92 is: 1,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.72 : 3,642.30 = 784.92 : x
  2. Step 2: Convert to fraction form
    2,428.72/3,642.30 = 784.92/x
  3. Step 3: Cross multiply
    2,428.72x = 3,642.30 × 784.92
  4. Step 4: Simplify right side
    2,428.72x = 2,858,927.77
  5. Step 5: Solve for x
    x = 2,858,927.77/2,428.72
  6. Step 6: Final answer
    x = 1,177.13

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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.