Home / 1,545.70-2,317.20-929.65

Finding the Fourth Proportional to 1,545.70, 2,317.20 and 929.65

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Solution

The fourth proportional to 1,545.70, 2,317.20 and 929.65 is: 1,393.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.70 : 2,317.20 = 929.65 : x
  2. Step 2: Convert to fraction form
    1,545.70/2,317.20 = 929.65/x
  3. Step 3: Cross multiply
    1,545.70x = 2,317.20 × 929.65
  4. Step 4: Simplify right side
    1,545.70x = 2,154,184.98
  5. Step 5: Solve for x
    x = 2,154,184.98/1,545.70
  6. Step 6: Final answer
    x = 1,393.66

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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.