Home / 7,755.12-10,702.14-4,218.36

Finding the Fourth Proportional to 7,755.12, 10,702.14 and 4,218.36

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Solution

The fourth proportional to 7,755.12, 10,702.14 and 4,218.36 is: 5,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.12 : 10,702.14 = 4,218.36 : x
  2. Step 2: Convert to fraction form
    7,755.12/10,702.14 = 4,218.36/x
  3. Step 3: Cross multiply
    7,755.12x = 10,702.14 × 4,218.36
  4. Step 4: Simplify right side
    7,755.12x = 45,145,479.29
  5. Step 5: Solve for x
    x = 45,145,479.29/7,755.12
  6. Step 6: Final answer
    x = 5,821.38

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Half scale
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Double scale
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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.