Home / 1,715.43-2,572.38-619.80

Finding the Fourth Proportional to 1,715.43, 2,572.38 and 619.80

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Solution

The fourth proportional to 1,715.43, 2,572.38 and 619.80 is: 929.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.43 : 2,572.38 = 619.80 : x
  2. Step 2: Convert to fraction form
    1,715.43/2,572.38 = 619.80/x
  3. Step 3: Cross multiply
    1,715.43x = 2,572.38 × 619.80
  4. Step 4: Simplify right side
    1,715.43x = 1,594,367.69
  5. Step 5: Solve for x
    x = 1,594,367.69/1,715.43
  6. Step 6: Final answer
    x = 929.43

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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.