Home / 7,721.16-11,581.72-5,422.92

Finding the Fourth Proportional to 7,721.16, 11,581.72 and 5,422.92

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Solution

The fourth proportional to 7,721.16, 11,581.72 and 5,422.92 is: 8,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.16 : 11,581.72 = 5,422.92 : x
  2. Step 2: Convert to fraction form
    7,721.16/11,581.72 = 5,422.92/x
  3. Step 3: Cross multiply
    7,721.16x = 11,581.72 × 5,422.92
  4. Step 4: Simplify right side
    7,721.16x = 62,806,741.02
  5. Step 5: Solve for x
    x = 62,806,741.02/7,721.16
  6. Step 6: Final answer
    x = 8,134.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.