Home / 1,572.32-2,358.40-922.72

Finding the Fourth Proportional to 1,572.32, 2,358.40 and 922.72

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Solution

The fourth proportional to 1,572.32, 2,358.40 and 922.72 is: 1,384.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.32 : 2,358.40 = 922.72 : x
  2. Step 2: Convert to fraction form
    1,572.32/2,358.40 = 922.72/x
  3. Step 3: Cross multiply
    1,572.32x = 2,358.40 × 922.72
  4. Step 4: Simplify right side
    1,572.32x = 2,176,142.85
  5. Step 5: Solve for x
    x = 2,176,142.85/1,572.32
  6. Step 6: Final answer
    x = 1,384.03

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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.