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Finding the Fourth Proportional to 8,340.68, 12,560.26 and 7,258.08

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Solution

The fourth proportional to 8,340.68, 12,560.26 and 7,258.08 is: 10,929.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.68 : 12,560.26 = 7,258.08 : x
  2. Step 2: Convert to fraction form
    8,340.68/12,560.26 = 7,258.08/x
  3. Step 3: Cross multiply
    8,340.68x = 12,560.26 × 7,258.08
  4. Step 4: Simplify right side
    8,340.68x = 91,163,371.90
  5. Step 5: Solve for x
    x = 91,163,371.90/8,340.68
  6. Step 6: Final answer
    x = 10,929.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.