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Finding the Fourth Proportional to 7,963.99, 10,990.56 and 4,776.19

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Solution

The fourth proportional to 7,963.99, 10,990.56 and 4,776.19 is: 6,591.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.99 : 10,990.56 = 4,776.19 : x
  2. Step 2: Convert to fraction form
    7,963.99/10,990.56 = 4,776.19/x
  3. Step 3: Cross multiply
    7,963.99x = 10,990.56 × 4,776.19
  4. Step 4: Simplify right side
    7,963.99x = 52,493,002.77
  5. Step 5: Solve for x
    x = 52,493,002.77/7,963.99
  6. Step 6: Final answer
    x = 6,591.29

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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.