Home / 1,715.40-2,572.92-619.56

Finding the Fourth Proportional to 1,715.40, 2,572.92 and 619.56

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Solution

The fourth proportional to 1,715.40, 2,572.92 and 619.56 is: 929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.40 : 2,572.92 = 619.56 : x
  2. Step 2: Convert to fraction form
    1,715.40/2,572.92 = 619.56/x
  3. Step 3: Cross multiply
    1,715.40x = 2,572.92 × 619.56
  4. Step 4: Simplify right side
    1,715.40x = 1,594,078.32
  5. Step 5: Solve for x
    x = 1,594,078.32/1,715.40
  6. Step 6: Final answer
    x = 929.27

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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.