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Finding the Fourth Proportional to 5,541.40, 8,312.10 and 5,087.80

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Solution

The fourth proportional to 5,541.40, 8,312.10 and 5,087.80 is: 7,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,541.40 : 8,312.10 = 5,087.80 : x
  2. Step 2: Convert to fraction form
    5,541.40/8,312.10 = 5,087.80/x
  3. Step 3: Cross multiply
    5,541.40x = 8,312.10 × 5,087.80
  4. Step 4: Simplify right side
    5,541.40x = 42,290,302.38
  5. Step 5: Solve for x
    x = 42,290,302.38/5,541.40
  6. Step 6: Final answer
    x = 7,631.70

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Similar ratio
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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.