Home / 8,929.88-12,310.48-6,411.18

Finding the Fourth Proportional to 8,929.88, 12,310.48 and 6,411.18

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Solution

The fourth proportional to 8,929.88, 12,310.48 and 6,411.18 is: 8,838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.88 : 12,310.48 = 6,411.18 : x
  2. Step 2: Convert to fraction form
    8,929.88/12,310.48 = 6,411.18/x
  3. Step 3: Cross multiply
    8,929.88x = 12,310.48 × 6,411.18
  4. Step 4: Simplify right side
    8,929.88x = 78,924,757.34
  5. Step 5: Solve for x
    x = 78,924,757.34/8,929.88
  6. Step 6: Final answer
    x = 8,838.28

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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.