Home / 5,290.20-7,285.68-5,175.41

Finding the Fourth Proportional to 5,290.20, 7,285.68 and 5,175.41

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Solution

The fourth proportional to 5,290.20, 7,285.68 and 5,175.41 is: 7,127.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.20 : 7,285.68 = 5,175.41 : x
  2. Step 2: Convert to fraction form
    5,290.20/7,285.68 = 5,175.41/x
  3. Step 3: Cross multiply
    5,290.20x = 7,285.68 × 5,175.41
  4. Step 4: Simplify right side
    5,290.20x = 37,706,344.70
  5. Step 5: Solve for x
    x = 37,706,344.70/5,290.20
  6. Step 6: Final answer
    x = 7,127.58

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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.