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Finding the Fourth Proportional to 8,776.98, 12,047.76 and 7,759.98

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Solution

The fourth proportional to 8,776.98, 12,047.76 and 7,759.98 is: 10,651.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,776.98 : 12,047.76 = 7,759.98 : x
  2. Step 2: Convert to fraction form
    8,776.98/12,047.76 = 7,759.98/x
  3. Step 3: Cross multiply
    8,776.98x = 12,047.76 × 7,759.98
  4. Step 4: Simplify right side
    8,776.98x = 93,490,376.64
  5. Step 5: Solve for x
    x = 93,490,376.64/8,776.98
  6. Step 6: Final answer
    x = 10,651.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.