Home / 9,221.79-12,726.14-5,242.67

Finding the Fourth Proportional to 9,221.79, 12,726.14 and 5,242.67

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Solution

The fourth proportional to 9,221.79, 12,726.14 and 5,242.67 is: 7,234.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,221.79 : 12,726.14 = 5,242.67 : x
  2. Step 2: Convert to fraction form
    9,221.79/12,726.14 = 5,242.67/x
  3. Step 3: Cross multiply
    9,221.79x = 12,726.14 × 5,242.67
  4. Step 4: Simplify right side
    9,221.79x = 66,718,862.55
  5. Step 5: Solve for x
    x = 66,718,862.55/9,221.79
  6. Step 6: Final answer
    x = 7,234.91

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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.