Home / 4,140.80-5,708.71-2,812.20

Finding the Fourth Proportional to 4,140.80, 5,708.71 and 2,812.20

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Solution

The fourth proportional to 4,140.80, 5,708.71 and 2,812.20 is: 3,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.80 : 5,708.71 = 2,812.20 : x
  2. Step 2: Convert to fraction form
    4,140.80/5,708.71 = 2,812.20/x
  3. Step 3: Cross multiply
    4,140.80x = 5,708.71 × 2,812.20
  4. Step 4: Simplify right side
    4,140.80x = 16,054,034.26
  5. Step 5: Solve for x
    x = 16,054,034.26/4,140.80
  6. Step 6: Final answer
    x = 3,877.04

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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.