Home / 5,742.12-7,915.14-3,751.68

Finding the Fourth Proportional to 5,742.12, 7,915.14 and 3,751.68

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Solution

The fourth proportional to 5,742.12, 7,915.14 and 3,751.68 is: 5,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,742.12 : 7,915.14 = 3,751.68 : x
  2. Step 2: Convert to fraction form
    5,742.12/7,915.14 = 3,751.68/x
  3. Step 3: Cross multiply
    5,742.12x = 7,915.14 × 3,751.68
  4. Step 4: Simplify right side
    5,742.12x = 29,695,072.44
  5. Step 5: Solve for x
    x = 29,695,072.44/5,742.12
  6. Step 6: Final answer
    x = 5,171.45

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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.