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Finding the Fourth Proportional to 8,751.20, 12,277.60 and 8,751.20

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Solution

The fourth proportional to 8,751.20, 12,277.60 and 8,751.20 is: 12,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.20 : 12,277.60 = 8,751.20 : x
  2. Step 2: Convert to fraction form
    8,751.20/12,277.60 = 8,751.20/x
  3. Step 3: Cross multiply
    8,751.20x = 12,277.60 × 8,751.20
  4. Step 4: Simplify right side
    8,751.20x = 107,443,733.12
  5. Step 5: Solve for x
    x = 107,443,733.12/8,751.20
  6. Step 6: Final answer
    x = 12,277.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.