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Finding the Fourth Proportional to 8,809.22, 12,149.66 and 7,744.74

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Solution

The fourth proportional to 8,809.22, 12,149.66 and 7,744.74 is: 10,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.22 : 12,149.66 = 7,744.74 : x
  2. Step 2: Convert to fraction form
    8,809.22/12,149.66 = 7,744.74/x
  3. Step 3: Cross multiply
    8,809.22x = 12,149.66 × 7,744.74
  4. Step 4: Simplify right side
    8,809.22x = 94,095,931.59
  5. Step 5: Solve for x
    x = 94,095,931.59/8,809.22
  6. Step 6: Final answer
    x = 10,681.53

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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.