Home / 8,827.17-12,170.43-6,465.21

Finding the Fourth Proportional to 8,827.17, 12,170.43 and 6,465.21

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Solution

The fourth proportional to 8,827.17, 12,170.43 and 6,465.21 is: 8,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,827.17 : 12,170.43 = 6,465.21 : x
  2. Step 2: Convert to fraction form
    8,827.17/12,170.43 = 6,465.21/x
  3. Step 3: Cross multiply
    8,827.17x = 12,170.43 × 6,465.21
  4. Step 4: Simplify right side
    8,827.17x = 78,684,385.74
  5. Step 5: Solve for x
    x = 78,684,385.74/8,827.17
  6. Step 6: Final answer
    x = 8,913.89

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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.