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Finding the Fourth Proportional to 8,701.76, 12,008.42 and 4,975.76

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Solution

The fourth proportional to 8,701.76, 12,008.42 and 4,975.76 is: 6,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.76 : 12,008.42 = 4,975.76 : x
  2. Step 2: Convert to fraction form
    8,701.76/12,008.42 = 4,975.76/x
  3. Step 3: Cross multiply
    8,701.76x = 12,008.42 × 4,975.76
  4. Step 4: Simplify right side
    8,701.76x = 59,751,015.90
  5. Step 5: Solve for x
    x = 59,751,015.90/8,701.76
  6. Step 6: Final answer
    x = 6,866.54

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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.