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Finding the Fourth Proportional to 9,154.63, 12,621.17 and 7,272.46

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Solution

The fourth proportional to 9,154.63, 12,621.17 and 7,272.46 is: 10,026.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,154.63 : 12,621.17 = 7,272.46 : x
  2. Step 2: Convert to fraction form
    9,154.63/12,621.17 = 7,272.46/x
  3. Step 3: Cross multiply
    9,154.63x = 12,621.17 × 7,272.46
  4. Step 4: Simplify right side
    9,154.63x = 91,786,854.51
  5. Step 5: Solve for x
    x = 91,786,854.51/9,154.63
  6. Step 6: Final answer
    x = 10,026.28

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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.