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Finding the Fourth Proportional to 7,770.77, 10,723.11 and 4,785.92

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Solution

The fourth proportional to 7,770.77, 10,723.11 and 4,785.92 is: 6,604.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.77 : 10,723.11 = 4,785.92 : x
  2. Step 2: Convert to fraction form
    7,770.77/10,723.11 = 4,785.92/x
  3. Step 3: Cross multiply
    7,770.77x = 10,723.11 × 4,785.92
  4. Step 4: Simplify right side
    7,770.77x = 51,319,946.61
  5. Step 5: Solve for x
    x = 51,319,946.61/7,770.77
  6. Step 6: Final answer
    x = 6,604.23

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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.