Home / 8,168.45-11,275.81-5,520.35

Finding the Fourth Proportional to 8,168.45, 11,275.81 and 5,520.35

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Solution

The fourth proportional to 8,168.45, 11,275.81 and 5,520.35 is: 7,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.45 : 11,275.81 = 5,520.35 : x
  2. Step 2: Convert to fraction form
    8,168.45/11,275.81 = 5,520.35/x
  3. Step 3: Cross multiply
    8,168.45x = 11,275.81 × 5,520.35
  4. Step 4: Simplify right side
    8,168.45x = 62,246,432.12
  5. Step 5: Solve for x
    x = 62,246,432.12/8,168.45
  6. Step 6: Final answer
    x = 7,620.35

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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.