Home / 7,755.30-10,702.32-4,218.51

Finding the Fourth Proportional to 7,755.30, 10,702.32 and 4,218.51

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Solution

The fourth proportional to 7,755.30, 10,702.32 and 4,218.51 is: 5,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.30 : 10,702.32 = 4,218.51 : x
  2. Step 2: Convert to fraction form
    7,755.30/10,702.32 = 4,218.51/x
  3. Step 3: Cross multiply
    7,755.30x = 10,702.32 × 4,218.51
  4. Step 4: Simplify right side
    7,755.30x = 45,147,843.94
  5. Step 5: Solve for x
    x = 45,147,843.94/7,755.30
  6. Step 6: Final answer
    x = 5,821.55

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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.