Home / 5,310.40-7,338.88-3,988.48

Finding the Fourth Proportional to 5,310.40, 7,338.88 and 3,988.48

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Solution

The fourth proportional to 5,310.40, 7,338.88 and 3,988.48 is: 5,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.40 : 7,338.88 = 3,988.48 : x
  2. Step 2: Convert to fraction form
    5,310.40/7,338.88 = 3,988.48/x
  3. Step 3: Cross multiply
    5,310.40x = 7,338.88 × 3,988.48
  4. Step 4: Simplify right side
    5,310.40x = 29,270,976.10
  5. Step 5: Solve for x
    x = 29,270,976.10/5,310.40
  6. Step 6: Final answer
    x = 5,512.01

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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.