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Finding the Fourth Proportional to 7,652.40, 11,478.60 and 2,458.80

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Solution

The fourth proportional to 7,652.40, 11,478.60 and 2,458.80 is: 3,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,652.40 : 11,478.60 = 2,458.80 : x
  2. Step 2: Convert to fraction form
    7,652.40/11,478.60 = 2,458.80/x
  3. Step 3: Cross multiply
    7,652.40x = 11,478.60 × 2,458.80
  4. Step 4: Simplify right side
    7,652.40x = 28,223,581.68
  5. Step 5: Solve for x
    x = 28,223,581.68/7,652.40
  6. Step 6: Final answer
    x = 3,688.20

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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.