Home / 9,195.48-12,690.69-5,419.81

Finding the Fourth Proportional to 9,195.48, 12,690.69 and 5,419.81

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Solution

The fourth proportional to 9,195.48, 12,690.69 and 5,419.81 is: 7,479.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,195.48 : 12,690.69 = 5,419.81 : x
  2. Step 2: Convert to fraction form
    9,195.48/12,690.69 = 5,419.81/x
  3. Step 3: Cross multiply
    9,195.48x = 12,690.69 × 5,419.81
  4. Step 4: Simplify right side
    9,195.48x = 68,781,128.57
  5. Step 5: Solve for x
    x = 68,781,128.57/9,195.48
  6. Step 6: Final answer
    x = 7,479.88

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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.