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Finding the Fourth Proportional to 1,523.76, 2,103.24 and 934.60

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Solution

The fourth proportional to 1,523.76, 2,103.24 and 934.60 is: 1,290.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.76 : 2,103.24 = 934.60 : x
  2. Step 2: Convert to fraction form
    1,523.76/2,103.24 = 934.60/x
  3. Step 3: Cross multiply
    1,523.76x = 2,103.24 × 934.60
  4. Step 4: Simplify right side
    1,523.76x = 1,965,688.10
  5. Step 5: Solve for x
    x = 1,965,688.10/1,523.76
  6. Step 6: Final answer
    x = 1,290.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.