Home / 9,119.76-12,585.21-5,343.66

Finding the Fourth Proportional to 9,119.76, 12,585.21 and 5,343.66

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Solution

The fourth proportional to 9,119.76, 12,585.21 and 5,343.66 is: 7,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.76 : 12,585.21 = 5,343.66 : x
  2. Step 2: Convert to fraction form
    9,119.76/12,585.21 = 5,343.66/x
  3. Step 3: Cross multiply
    9,119.76x = 12,585.21 × 5,343.66
  4. Step 4: Simplify right side
    9,119.76x = 67,251,083.27
  5. Step 5: Solve for x
    x = 67,251,083.27/9,119.76
  6. Step 6: Final answer
    x = 7,374.22

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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.