Home / 2,489.23-3,439.02-2,120.14

Finding the Fourth Proportional to 2,489.23, 3,439.02 and 2,120.14

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Solution

The fourth proportional to 2,489.23, 3,439.02 and 2,120.14 is: 2,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.23 : 3,439.02 = 2,120.14 : x
  2. Step 2: Convert to fraction form
    2,489.23/3,439.02 = 2,120.14/x
  3. Step 3: Cross multiply
    2,489.23x = 3,439.02 × 2,120.14
  4. Step 4: Simplify right side
    2,489.23x = 7,291,203.86
  5. Step 5: Solve for x
    x = 7,291,203.86/2,489.23
  6. Step 6: Final answer
    x = 2,929.10

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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.