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Finding the Fourth Proportional to 2,376.89, 3,565.53 and 621.89

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Solution

The fourth proportional to 2,376.89, 3,565.53 and 621.89 is: 932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.89 : 3,565.53 = 621.89 : x
  2. Step 2: Convert to fraction form
    2,376.89/3,565.53 = 621.89/x
  3. Step 3: Cross multiply
    2,376.89x = 3,565.53 × 621.89
  4. Step 4: Simplify right side
    2,376.89x = 2,217,346.51
  5. Step 5: Solve for x
    x = 2,217,346.51/2,376.89
  6. Step 6: Final answer
    x = 932.88

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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.