Home / 1,715.28-2,573.19-619.90

Finding the Fourth Proportional to 1,715.28, 2,573.19 and 619.90

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Solution

The fourth proportional to 1,715.28, 2,573.19 and 619.90 is: 929.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.28 : 2,573.19 = 619.90 : x
  2. Step 2: Convert to fraction form
    1,715.28/2,573.19 = 619.90/x
  3. Step 3: Cross multiply
    1,715.28x = 2,573.19 × 619.90
  4. Step 4: Simplify right side
    1,715.28x = 1,595,130.27
  5. Step 5: Solve for x
    x = 1,595,130.27/1,715.28
  6. Step 6: Final answer
    x = 929.96

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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.