Home / 7,621.60-11,432.40-2,691.40

Finding the Fourth Proportional to 7,621.60, 11,432.40 and 2,691.40

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Solution

The fourth proportional to 7,621.60, 11,432.40 and 2,691.40 is: 4,037.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.60 : 11,432.40 = 2,691.40 : x
  2. Step 2: Convert to fraction form
    7,621.60/11,432.40 = 2,691.40/x
  3. Step 3: Cross multiply
    7,621.60x = 11,432.40 × 2,691.40
  4. Step 4: Simplify right side
    7,621.60x = 30,769,161.36
  5. Step 5: Solve for x
    x = 30,769,161.36/7,621.60
  6. Step 6: Final answer
    x = 4,037.10

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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.