Home / 5,412.79-7,470.90-3,175.39

Finding the Fourth Proportional to 5,412.79, 7,470.90 and 3,175.39

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Solution

The fourth proportional to 5,412.79, 7,470.90 and 3,175.39 is: 4,382.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.79 : 7,470.90 = 3,175.39 : x
  2. Step 2: Convert to fraction form
    5,412.79/7,470.90 = 3,175.39/x
  3. Step 3: Cross multiply
    5,412.79x = 7,470.90 × 3,175.39
  4. Step 4: Simplify right side
    5,412.79x = 23,722,988.47
  5. Step 5: Solve for x
    x = 23,722,988.47/5,412.79
  6. Step 6: Final answer
    x = 4,382.76

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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.