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Finding the Fourth Proportional to 8,756.60, 12,070.70 and 6,231.16

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Solution

The fourth proportional to 8,756.60, 12,070.70 and 6,231.16 is: 8,589.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.60 : 12,070.70 = 6,231.16 : x
  2. Step 2: Convert to fraction form
    8,756.60/12,070.70 = 6,231.16/x
  3. Step 3: Cross multiply
    8,756.60x = 12,070.70 × 6,231.16
  4. Step 4: Simplify right side
    8,756.60x = 75,214,463.01
  5. Step 5: Solve for x
    x = 75,214,463.01/8,756.60
  6. Step 6: Final answer
    x = 8,589.46

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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.