Home / 4,242.36-6,359.76-2,161.20

Finding the Fourth Proportional to 4,242.36, 6,359.76 and 2,161.20

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Solution

The fourth proportional to 4,242.36, 6,359.76 and 2,161.20 is: 3,239.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,242.36 : 6,359.76 = 2,161.20 : x
  2. Step 2: Convert to fraction form
    4,242.36/6,359.76 = 2,161.20/x
  3. Step 3: Cross multiply
    4,242.36x = 6,359.76 × 2,161.20
  4. Step 4: Simplify right side
    4,242.36x = 13,744,713.31
  5. Step 5: Solve for x
    x = 13,744,713.31/4,242.36
  6. Step 6: Final answer
    x = 3,239.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.