Home / 5,117.10-7,061.30-2,879.07

Finding the Fourth Proportional to 5,117.10, 7,061.30 and 2,879.07

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Solution

The fourth proportional to 5,117.10, 7,061.30 and 2,879.07 is: 3,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.10 : 7,061.30 = 2,879.07 : x
  2. Step 2: Convert to fraction form
    5,117.10/7,061.30 = 2,879.07/x
  3. Step 3: Cross multiply
    5,117.10x = 7,061.30 × 2,879.07
  4. Step 4: Simplify right side
    5,117.10x = 20,329,941.68
  5. Step 5: Solve for x
    x = 20,329,941.68/5,117.10
  6. Step 6: Final answer
    x = 3,972.95

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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.