Home / 2,921.20-4,031.37-1,742.24

Finding the Fourth Proportional to 2,921.20, 4,031.37 and 1,742.24

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Solution

The fourth proportional to 2,921.20, 4,031.37 and 1,742.24 is: 2,404.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.20 : 4,031.37 = 1,742.24 : x
  2. Step 2: Convert to fraction form
    2,921.20/4,031.37 = 1,742.24/x
  3. Step 3: Cross multiply
    2,921.20x = 4,031.37 × 1,742.24
  4. Step 4: Simplify right side
    2,921.20x = 7,023,605.36
  5. Step 5: Solve for x
    x = 7,023,605.36/2,921.20
  6. Step 6: Final answer
    x = 2,404.36

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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.