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Finding the Fourth Proportional to 8,762.39, 13,079.70 and 7,655.22

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Solution

The fourth proportional to 8,762.39, 13,079.70 and 7,655.22 is: 11,427.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.39 : 13,079.70 = 7,655.22 : x
  2. Step 2: Convert to fraction form
    8,762.39/13,079.70 = 7,655.22/x
  3. Step 3: Cross multiply
    8,762.39x = 13,079.70 × 7,655.22
  4. Step 4: Simplify right side
    8,762.39x = 100,127,981.03
  5. Step 5: Solve for x
    x = 100,127,981.03/8,762.39
  6. Step 6: Final answer
    x = 11,427.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.