Home / 8,721.93-12,036.56-5,188.71

Finding the Fourth Proportional to 8,721.93, 12,036.56 and 5,188.71

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Solution

The fourth proportional to 8,721.93, 12,036.56 and 5,188.71 is: 7,160.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.93 : 12,036.56 = 5,188.71 : x
  2. Step 2: Convert to fraction form
    8,721.93/12,036.56 = 5,188.71/x
  3. Step 3: Cross multiply
    8,721.93x = 12,036.56 × 5,188.71
  4. Step 4: Simplify right side
    8,721.93x = 62,454,193.29
  5. Step 5: Solve for x
    x = 62,454,193.29/8,721.93
  6. Step 6: Final answer
    x = 7,160.59

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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.