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Finding the Fourth Proportional to 8,662.08, 12,957.44 and 7,203.20

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Solution

The fourth proportional to 8,662.08, 12,957.44 and 7,203.20 is: 10,775.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.08 : 12,957.44 = 7,203.20 : x
  2. Step 2: Convert to fraction form
    8,662.08/12,957.44 = 7,203.20/x
  3. Step 3: Cross multiply
    8,662.08x = 12,957.44 × 7,203.20
  4. Step 4: Simplify right side
    8,662.08x = 93,335,031.81
  5. Step 5: Solve for x
    x = 93,335,031.81/8,662.08
  6. Step 6: Final answer
    x = 10,775.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.