Home / 9,215.71-12,718.28-5,182.92

Finding the Fourth Proportional to 9,215.71, 12,718.28 and 5,182.92

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Solution

The fourth proportional to 9,215.71, 12,718.28 and 5,182.92 is: 7,152.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.71 : 12,718.28 = 5,182.92 : x
  2. Step 2: Convert to fraction form
    9,215.71/12,718.28 = 5,182.92/x
  3. Step 3: Cross multiply
    9,215.71x = 12,718.28 × 5,182.92
  4. Step 4: Simplify right side
    9,215.71x = 65,917,840.73
  5. Step 5: Solve for x
    x = 65,917,840.73/9,215.71
  6. Step 6: Final answer
    x = 7,152.77

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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.