Home / 2,619.42-3,614.70-1,440.42

Finding the Fourth Proportional to 2,619.42, 3,614.70 and 1,440.42

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Solution

The fourth proportional to 2,619.42, 3,614.70 and 1,440.42 is: 1,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.42 : 3,614.70 = 1,440.42 : x
  2. Step 2: Convert to fraction form
    2,619.42/3,614.70 = 1,440.42/x
  3. Step 3: Cross multiply
    2,619.42x = 3,614.70 × 1,440.42
  4. Step 4: Simplify right side
    2,619.42x = 5,206,686.17
  5. Step 5: Solve for x
    x = 5,206,686.17/2,619.42
  6. Step 6: Final answer
    x = 1,987.72

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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.