Home / 3,870.06-5,340.61-2,191.44

Finding the Fourth Proportional to 3,870.06, 5,340.61 and 2,191.44

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Solution

The fourth proportional to 3,870.06, 5,340.61 and 2,191.44 is: 3,024.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.06 : 5,340.61 = 2,191.44 : x
  2. Step 2: Convert to fraction form
    3,870.06/5,340.61 = 2,191.44/x
  3. Step 3: Cross multiply
    3,870.06x = 5,340.61 × 2,191.44
  4. Step 4: Simplify right side
    3,870.06x = 11,703,626.38
  5. Step 5: Solve for x
    x = 11,703,626.38/3,870.06
  6. Step 6: Final answer
    x = 3,024.15

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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.