Home / 2,939.68-4,400.16-1,637.20

Finding the Fourth Proportional to 2,939.68, 4,400.16 and 1,637.20

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Solution

The fourth proportional to 2,939.68, 4,400.16 and 1,637.20 is: 2,450.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.68 : 4,400.16 = 1,637.20 : x
  2. Step 2: Convert to fraction form
    2,939.68/4,400.16 = 1,637.20/x
  3. Step 3: Cross multiply
    2,939.68x = 4,400.16 × 1,637.20
  4. Step 4: Simplify right side
    2,939.68x = 7,203,941.95
  5. Step 5: Solve for x
    x = 7,203,941.95/2,939.68
  6. Step 6: Final answer
    x = 2,450.59

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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.