Home / 7,331.38-10,118.12-4,187.57

Finding the Fourth Proportional to 7,331.38, 10,118.12 and 4,187.57

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Solution

The fourth proportional to 7,331.38, 10,118.12 and 4,187.57 is: 5,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,331.38 : 10,118.12 = 4,187.57 : x
  2. Step 2: Convert to fraction form
    7,331.38/10,118.12 = 4,187.57/x
  3. Step 3: Cross multiply
    7,331.38x = 10,118.12 × 4,187.57
  4. Step 4: Simplify right side
    7,331.38x = 42,370,264.24
  5. Step 5: Solve for x
    x = 42,370,264.24/7,331.38
  6. Step 6: Final answer
    x = 5,779.30

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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.