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Finding the Fourth Proportional to 2,489.90, 3,435.58 and 1,494.81

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Solution

The fourth proportional to 2,489.90, 3,435.58 and 1,494.81 is: 2,062.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.90 : 3,435.58 = 1,494.81 : x
  2. Step 2: Convert to fraction form
    2,489.90/3,435.58 = 1,494.81/x
  3. Step 3: Cross multiply
    2,489.90x = 3,435.58 × 1,494.81
  4. Step 4: Simplify right side
    2,489.90x = 5,135,541.21
  5. Step 5: Solve for x
    x = 5,135,541.21/2,489.90
  6. Step 6: Final answer
    x = 2,062.55

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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.