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Finding the Fourth Proportional to 9,154.88, 12,621.51 and 7,272.71

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Solution

The fourth proportional to 9,154.88, 12,621.51 and 7,272.71 is: 10,026.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,154.88 : 12,621.51 = 7,272.71 : x
  2. Step 2: Convert to fraction form
    9,154.88/12,621.51 = 7,272.71/x
  3. Step 3: Cross multiply
    9,154.88x = 12,621.51 × 7,272.71
  4. Step 4: Simplify right side
    9,154.88x = 91,792,518.88
  5. Step 5: Solve for x
    x = 91,792,518.88/9,154.88
  6. Step 6: Final answer
    x = 10,026.63

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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.