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Finding the Fourth Proportional to 1,670.32, 2,500.21 and 937.68

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Solution

The fourth proportional to 1,670.32, 2,500.21 and 937.68 is: 1,403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.32 : 2,500.21 = 937.68 : x
  2. Step 2: Convert to fraction form
    1,670.32/2,500.21 = 937.68/x
  3. Step 3: Cross multiply
    1,670.32x = 2,500.21 × 937.68
  4. Step 4: Simplify right side
    1,670.32x = 2,344,396.91
  5. Step 5: Solve for x
    x = 2,344,396.91/1,670.32
  6. Step 6: Final answer
    x = 1,403.56

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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.