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Finding the Fourth Proportional to 7,755.66, 10,710.38 and 6,630.06

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Solution

The fourth proportional to 7,755.66, 10,710.38 and 6,630.06 is: 9,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.66 : 10,710.38 = 6,630.06 : x
  2. Step 2: Convert to fraction form
    7,755.66/10,710.38 = 6,630.06/x
  3. Step 3: Cross multiply
    7,755.66x = 10,710.38 × 6,630.06
  4. Step 4: Simplify right side
    7,755.66x = 71,010,462.02
  5. Step 5: Solve for x
    x = 71,010,462.02/7,755.66
  6. Step 6: Final answer
    x = 9,155.95

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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.