Home / 8,878.28-13,249.90-7,894.16

Finding the Fourth Proportional to 8,878.28, 13,249.90 and 7,894.16

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Solution

The fourth proportional to 8,878.28, 13,249.90 and 7,894.16 is: 11,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.28 : 13,249.90 = 7,894.16 : x
  2. Step 2: Convert to fraction form
    8,878.28/13,249.90 = 7,894.16/x
  3. Step 3: Cross multiply
    8,878.28x = 13,249.90 × 7,894.16
  4. Step 4: Simplify right side
    8,878.28x = 104,596,830.58
  5. Step 5: Solve for x
    x = 104,596,830.58/8,878.28
  6. Step 6: Final answer
    x = 11,781.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.