Home / 7,755.12-10,702.17-4,218.39

Finding the Fourth Proportional to 7,755.12, 10,702.17 and 4,218.39

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Solution

The fourth proportional to 7,755.12, 10,702.17 and 4,218.39 is: 5,821.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.12 : 10,702.17 = 4,218.39 : x
  2. Step 2: Convert to fraction form
    7,755.12/10,702.17 = 4,218.39/x
  3. Step 3: Cross multiply
    7,755.12x = 10,702.17 × 4,218.39
  4. Step 4: Simplify right side
    7,755.12x = 45,145,926.91
  5. Step 5: Solve for x
    x = 45,145,926.91/7,755.12
  6. Step 6: Final answer
    x = 5,821.43

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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.