Home / 8,423.68-11,615.05-5,394.82

Finding the Fourth Proportional to 8,423.68, 11,615.05 and 5,394.82

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Solution

The fourth proportional to 8,423.68, 11,615.05 and 5,394.82 is: 7,438.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.68 : 11,615.05 = 5,394.82 : x
  2. Step 2: Convert to fraction form
    8,423.68/11,615.05 = 5,394.82/x
  3. Step 3: Cross multiply
    8,423.68x = 11,615.05 × 5,394.82
  4. Step 4: Simplify right side
    8,423.68x = 62,661,104.04
  5. Step 5: Solve for x
    x = 62,661,104.04/8,423.68
  6. Step 6: Final answer
    x = 7,438.69

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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.