Home / 7,155.19-9,874.23-3,968.59

Finding the Fourth Proportional to 7,155.19, 9,874.23 and 3,968.59

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Solution

The fourth proportional to 7,155.19, 9,874.23 and 3,968.59 is: 5,476.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.19 : 9,874.23 = 3,968.59 : x
  2. Step 2: Convert to fraction form
    7,155.19/9,874.23 = 3,968.59/x
  3. Step 3: Cross multiply
    7,155.19x = 9,874.23 × 3,968.59
  4. Step 4: Simplify right side
    7,155.19x = 39,186,770.44
  5. Step 5: Solve for x
    x = 39,186,770.44/7,155.19
  6. Step 6: Final answer
    x = 5,476.69

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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.