Home / 8,911.40-12,294.60-5,551.47

Finding the Fourth Proportional to 8,911.40, 12,294.60 and 5,551.47

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Solution

The fourth proportional to 8,911.40, 12,294.60 and 5,551.47 is: 7,659.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.40 : 12,294.60 = 5,551.47 : x
  2. Step 2: Convert to fraction form
    8,911.40/12,294.60 = 5,551.47/x
  3. Step 3: Cross multiply
    8,911.40x = 12,294.60 × 5,551.47
  4. Step 4: Simplify right side
    8,911.40x = 68,253,103.06
  5. Step 5: Solve for x
    x = 68,253,103.06/8,911.40
  6. Step 6: Final answer
    x = 7,659.08

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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.