Home / 7,755.32-10,702.34-4,218.53

Finding the Fourth Proportional to 7,755.32, 10,702.34 and 4,218.53

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Solution

The fourth proportional to 7,755.32, 10,702.34 and 4,218.53 is: 5,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.32 : 10,702.34 = 4,218.53 : x
  2. Step 2: Convert to fraction form
    7,755.32/10,702.34 = 4,218.53/x
  3. Step 3: Cross multiply
    7,755.32x = 10,702.34 × 4,218.53
  4. Step 4: Simplify right side
    7,755.32x = 45,148,067.76
  5. Step 5: Solve for x
    x = 45,148,067.76/7,755.32
  6. Step 6: Final answer
    x = 5,821.56

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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.