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Finding the Fourth Proportional to 5,312.61, 7,968.92 and 2,390.13

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Solution

The fourth proportional to 5,312.61, 7,968.92 and 2,390.13 is: 3,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.61 : 7,968.92 = 2,390.13 : x
  2. Step 2: Convert to fraction form
    5,312.61/7,968.92 = 2,390.13/x
  3. Step 3: Cross multiply
    5,312.61x = 7,968.92 × 2,390.13
  4. Step 4: Simplify right side
    5,312.61x = 19,046,754.76
  5. Step 5: Solve for x
    x = 19,046,754.76/5,312.61
  6. Step 6: Final answer
    x = 3,585.20

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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.