Home / 2,900.02-4,002.17-1,721.20

Finding the Fourth Proportional to 2,900.02, 4,002.17 and 1,721.20

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Solution

The fourth proportional to 2,900.02, 4,002.17 and 1,721.20 is: 2,375.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.02 : 4,002.17 = 1,721.20 : x
  2. Step 2: Convert to fraction form
    2,900.02/4,002.17 = 1,721.20/x
  3. Step 3: Cross multiply
    2,900.02x = 4,002.17 × 1,721.20
  4. Step 4: Simplify right side
    2,900.02x = 6,888,535.00
  5. Step 5: Solve for x
    x = 6,888,535.00/2,900.02
  6. Step 6: Final answer
    x = 2,375.34

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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.