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Finding the Fourth Proportional to 3,487.68, 5,231.52 and 1,179

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Solution

The fourth proportional to 3,487.68, 5,231.52 and 1,179 is: 1,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.68 : 5,231.52 = 1,179 : x
  2. Step 2: Convert to fraction form
    3,487.68/5,231.52 = 1,179/x
  3. Step 3: Cross multiply
    3,487.68x = 5,231.52 × 1,179
  4. Step 4: Simplify right side
    3,487.68x = 6,167,962.08
  5. Step 5: Solve for x
    x = 6,167,962.08/3,487.68
  6. Step 6: Final answer
    x = 1,768.50

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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.