Home / 7,287.12-10,067.40-5,615.28

Finding the Fourth Proportional to 7,287.12, 10,067.40 and 5,615.28

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Solution

The fourth proportional to 7,287.12, 10,067.40 and 5,615.28 is: 7,757.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.12 : 10,067.40 = 5,615.28 : x
  2. Step 2: Convert to fraction form
    7,287.12/10,067.40 = 5,615.28/x
  3. Step 3: Cross multiply
    7,287.12x = 10,067.40 × 5,615.28
  4. Step 4: Simplify right side
    7,287.12x = 56,531,269.87
  5. Step 5: Solve for x
    x = 56,531,269.87/7,287.12
  6. Step 6: Final answer
    x = 7,757.70

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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.