Home / 9,121.17-12,586.47-5,343.84

Finding the Fourth Proportional to 9,121.17, 12,586.47 and 5,343.84

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Solution

The fourth proportional to 9,121.17, 12,586.47 and 5,343.84 is: 7,374.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.17 : 12,586.47 = 5,343.84 : x
  2. Step 2: Convert to fraction form
    9,121.17/12,586.47 = 5,343.84/x
  3. Step 3: Cross multiply
    9,121.17x = 12,586.47 × 5,343.84
  4. Step 4: Simplify right side
    9,121.17x = 67,260,081.84
  5. Step 5: Solve for x
    x = 67,260,081.84/9,121.17
  6. Step 6: Final answer
    x = 7,374.06

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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.