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Finding the Fourth Proportional to 8,878.40, 13,305.45 and 5,908.40

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Solution

The fourth proportional to 8,878.40, 13,305.45 and 5,908.40 is: 8,854.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.40 : 13,305.45 = 5,908.40 : x
  2. Step 2: Convert to fraction form
    8,878.40/13,305.45 = 5,908.40/x
  3. Step 3: Cross multiply
    8,878.40x = 13,305.45 × 5,908.40
  4. Step 4: Simplify right side
    8,878.40x = 78,613,920.78
  5. Step 5: Solve for x
    x = 78,613,920.78/8,878.40
  6. Step 6: Final answer
    x = 8,854.51

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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.