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Finding the Fourth Proportional to 8,887.68, 12,258 and 8,291.52

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Solution

The fourth proportional to 8,887.68, 12,258 and 8,291.52 is: 11,435.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,887.68 : 12,258 = 8,291.52 : x
  2. Step 2: Convert to fraction form
    8,887.68/12,258 = 8,291.52/x
  3. Step 3: Cross multiply
    8,887.68x = 12,258 × 8,291.52
  4. Step 4: Simplify right side
    8,887.68x = 101,637,452.16
  5. Step 5: Solve for x
    x = 101,637,452.16/8,887.68
  6. Step 6: Final answer
    x = 11,435.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.