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Finding the Fourth Proportional to 2,374.29, 3,560.49 and 986.69

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Solution

The fourth proportional to 2,374.29, 3,560.49 and 986.69 is: 1,479.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,374.29 : 3,560.49 = 986.69 : x
  2. Step 2: Convert to fraction form
    2,374.29/3,560.49 = 986.69/x
  3. Step 3: Cross multiply
    2,374.29x = 3,560.49 × 986.69
  4. Step 4: Simplify right side
    2,374.29x = 3,513,082.08
  5. Step 5: Solve for x
    x = 3,513,082.08/2,374.29
  6. Step 6: Final answer
    x = 1,479.63

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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.