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Finding the Fourth Proportional to 5,740.60, 8,610.90 and 5,643.40

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Solution

The fourth proportional to 5,740.60, 8,610.90 and 5,643.40 is: 8,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,740.60 : 8,610.90 = 5,643.40 : x
  2. Step 2: Convert to fraction form
    5,740.60/8,610.90 = 5,643.40/x
  3. Step 3: Cross multiply
    5,740.60x = 8,610.90 × 5,643.40
  4. Step 4: Simplify right side
    5,740.60x = 48,594,753.06
  5. Step 5: Solve for x
    x = 48,594,753.06/5,740.60
  6. Step 6: Final answer
    x = 8,465.10

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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.