Home / 5,138.85-7,091.95-2,899.91

Finding the Fourth Proportional to 5,138.85, 7,091.95 and 2,899.91

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Solution

The fourth proportional to 5,138.85, 7,091.95 and 2,899.91 is: 4,002.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.85 : 7,091.95 = 2,899.91 : x
  2. Step 2: Convert to fraction form
    5,138.85/7,091.95 = 2,899.91/x
  3. Step 3: Cross multiply
    5,138.85x = 7,091.95 × 2,899.91
  4. Step 4: Simplify right side
    5,138.85x = 20,566,004.54
  5. Step 5: Solve for x
    x = 20,566,004.54/5,138.85
  6. Step 6: Final answer
    x = 4,002.06

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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.