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Finding the Fourth Proportional to 1,753.84, 2,415.90 and 1,487.80

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Solution

The fourth proportional to 1,753.84, 2,415.90 and 1,487.80 is: 2,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.84 : 2,415.90 = 1,487.80 : x
  2. Step 2: Convert to fraction form
    1,753.84/2,415.90 = 1,487.80/x
  3. Step 3: Cross multiply
    1,753.84x = 2,415.90 × 1,487.80
  4. Step 4: Simplify right side
    1,753.84x = 3,594,376.02
  5. Step 5: Solve for x
    x = 3,594,376.02/1,753.84
  6. Step 6: Final answer
    x = 2,049.43

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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.