Home / 8,891.36-12,275.20-5,911.28

Finding the Fourth Proportional to 8,891.36, 12,275.20 and 5,911.28

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Solution

The fourth proportional to 8,891.36, 12,275.20 and 5,911.28 is: 8,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.36 : 12,275.20 = 5,911.28 : x
  2. Step 2: Convert to fraction form
    8,891.36/12,275.20 = 5,911.28/x
  3. Step 3: Cross multiply
    8,891.36x = 12,275.20 × 5,911.28
  4. Step 4: Simplify right side
    8,891.36x = 72,562,144.26
  5. Step 5: Solve for x
    x = 72,562,144.26/8,891.36
  6. Step 6: Final answer
    x = 8,160.97

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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.