Home / 8,813.15-12,159.68-5,671.16

Finding the Fourth Proportional to 8,813.15, 12,159.68 and 5,671.16

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Solution

The fourth proportional to 8,813.15, 12,159.68 and 5,671.16 is: 7,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.15 : 12,159.68 = 5,671.16 : x
  2. Step 2: Convert to fraction form
    8,813.15/12,159.68 = 5,671.16/x
  3. Step 3: Cross multiply
    8,813.15x = 12,159.68 × 5,671.16
  4. Step 4: Simplify right side
    8,813.15x = 68,959,401.67
  5. Step 5: Solve for x
    x = 68,959,401.67/8,813.15
  6. Step 6: Final answer
    x = 7,824.61

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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.