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Finding the Fourth Proportional to 2,393.53, 3,590.30 and 987.62

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Solution

The fourth proportional to 2,393.53, 3,590.30 and 987.62 is: 1,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.53 : 3,590.30 = 987.62 : x
  2. Step 2: Convert to fraction form
    2,393.53/3,590.30 = 987.62/x
  3. Step 3: Cross multiply
    2,393.53x = 3,590.30 × 987.62
  4. Step 4: Simplify right side
    2,393.53x = 3,545,836.60
  5. Step 5: Solve for x
    x = 3,545,836.60/2,393.53
  6. Step 6: Final answer
    x = 1,481.43

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1.5x scale

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.