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Finding the Fourth Proportional to 3,489.48, 5,235.48 and 1,543.05

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Solution

The fourth proportional to 3,489.48, 5,235.48 and 1,543.05 is: 2,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.48 : 5,235.48 = 1,543.05 : x
  2. Step 2: Convert to fraction form
    3,489.48/5,235.48 = 1,543.05/x
  3. Step 3: Cross multiply
    3,489.48x = 5,235.48 × 1,543.05
  4. Step 4: Simplify right side
    3,489.48x = 8,078,607.41
  5. Step 5: Solve for x
    x = 8,078,607.41/3,489.48
  6. Step 6: Final answer
    x = 2,315.13

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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.