Home / 5,085.32-7,020.68-3,880.85

Finding the Fourth Proportional to 5,085.32, 7,020.68 and 3,880.85

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Solution

The fourth proportional to 5,085.32, 7,020.68 and 3,880.85 is: 5,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.32 : 7,020.68 = 3,880.85 : x
  2. Step 2: Convert to fraction form
    5,085.32/7,020.68 = 3,880.85/x
  3. Step 3: Cross multiply
    5,085.32x = 7,020.68 × 3,880.85
  4. Step 4: Simplify right side
    5,085.32x = 27,246,151.47
  5. Step 5: Solve for x
    x = 27,246,151.47/5,085.32
  6. Step 6: Final answer
    x = 5,357.81

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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.