Home / 3,540.70-4,887.03-2,143.90

Finding the Fourth Proportional to 3,540.70, 4,887.03 and 2,143.90

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Solution

The fourth proportional to 3,540.70, 4,887.03 and 2,143.90 is: 2,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.70 : 4,887.03 = 2,143.90 : x
  2. Step 2: Convert to fraction form
    3,540.70/4,887.03 = 2,143.90/x
  3. Step 3: Cross multiply
    3,540.70x = 4,887.03 × 2,143.90
  4. Step 4: Simplify right side
    3,540.70x = 10,477,303.62
  5. Step 5: Solve for x
    x = 10,477,303.62/3,540.70
  6. Step 6: Final answer
    x = 2,959.11

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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.