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Finding the Fourth Proportional to 5,710.68, 8,566.16 and 1,815.12

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Solution

The fourth proportional to 5,710.68, 8,566.16 and 1,815.12 is: 2,722.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,710.68 : 8,566.16 = 1,815.12 : x
  2. Step 2: Convert to fraction form
    5,710.68/8,566.16 = 1,815.12/x
  3. Step 3: Cross multiply
    5,710.68x = 8,566.16 × 1,815.12
  4. Step 4: Simplify right side
    5,710.68x = 15,548,608.34
  5. Step 5: Solve for x
    x = 15,548,608.34/5,710.68
  6. Step 6: Final answer
    x = 2,722.72

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Double scale
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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.