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Finding the Fourth Proportional to 9,151, 12,628.40 and 4,959.26

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Solution

The fourth proportional to 9,151, 12,628.40 and 4,959.26 is: 6,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151 : 12,628.40 = 4,959.26 : x
  2. Step 2: Convert to fraction form
    9,151/12,628.40 = 4,959.26/x
  3. Step 3: Cross multiply
    9,151x = 12,628.40 × 4,959.26
  4. Step 4: Simplify right side
    9,151x = 62,627,518.98
  5. Step 5: Solve for x
    x = 62,627,518.98/9,151
  6. Step 6: Final answer
    x = 6,843.79

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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.