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Finding the Fourth Proportional to 9,151.56, 12,629.04 and 4,959.78

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Solution

The fourth proportional to 9,151.56, 12,629.04 and 4,959.78 is: 6,844.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.56 : 12,629.04 = 4,959.78 : x
  2. Step 2: Convert to fraction form
    9,151.56/12,629.04 = 4,959.78/x
  3. Step 3: Cross multiply
    9,151.56x = 12,629.04 × 4,959.78
  4. Step 4: Simplify right side
    9,151.56x = 62,637,260.01
  5. Step 5: Solve for x
    x = 62,637,260.01/9,151.56
  6. Step 6: Final answer
    x = 6,844.44

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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.