Home / 5,175.28-7,140.72-4,339.36

Finding the Fourth Proportional to 5,175.28, 7,140.72 and 4,339.36

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Solution

The fourth proportional to 5,175.28, 7,140.72 and 4,339.36 is: 5,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.28 : 7,140.72 = 4,339.36 : x
  2. Step 2: Convert to fraction form
    5,175.28/7,140.72 = 4,339.36/x
  3. Step 3: Cross multiply
    5,175.28x = 7,140.72 × 4,339.36
  4. Step 4: Simplify right side
    5,175.28x = 30,986,154.74
  5. Step 5: Solve for x
    x = 30,986,154.74/5,175.28
  6. Step 6: Final answer
    x = 5,987.34

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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.