Home / 1,913.30-2,869.99-614.78

Finding the Fourth Proportional to 1,913.30, 2,869.99 and 614.78

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Solution

The fourth proportional to 1,913.30, 2,869.99 and 614.78 is: 922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.30 : 2,869.99 = 614.78 : x
  2. Step 2: Convert to fraction form
    1,913.30/2,869.99 = 614.78/x
  3. Step 3: Cross multiply
    1,913.30x = 2,869.99 × 614.78
  4. Step 4: Simplify right side
    1,913.30x = 1,764,406.81
  5. Step 5: Solve for x
    x = 1,764,406.81/1,913.30
  6. Step 6: Final answer
    x = 922.18

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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.