Home / 5,445.62-8,120.61-5,398.70

Finding the Fourth Proportional to 5,445.62, 8,120.61 and 5,398.70

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Solution

The fourth proportional to 5,445.62, 8,120.61 and 5,398.70 is: 8,050.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.62 : 8,120.61 = 5,398.70 : x
  2. Step 2: Convert to fraction form
    5,445.62/8,120.61 = 5,398.70/x
  3. Step 3: Cross multiply
    5,445.62x = 8,120.61 × 5,398.70
  4. Step 4: Simplify right side
    5,445.62x = 43,840,696.60
  5. Step 5: Solve for x
    x = 43,840,696.60/5,445.62
  6. Step 6: Final answer
    x = 8,050.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.