Home / 2,490.90-3,433.80-1,742.55

Finding the Fourth Proportional to 2,490.90, 3,433.80 and 1,742.55

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Solution

The fourth proportional to 2,490.90, 3,433.80 and 1,742.55 is: 2,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.90 : 3,433.80 = 1,742.55 : x
  2. Step 2: Convert to fraction form
    2,490.90/3,433.80 = 1,742.55/x
  3. Step 3: Cross multiply
    2,490.90x = 3,433.80 × 1,742.55
  4. Step 4: Simplify right side
    2,490.90x = 5,983,568.19
  5. Step 5: Solve for x
    x = 5,983,568.19/2,490.90
  6. Step 6: Final answer
    x = 2,402.17

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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.