Home / 2,619.31-3,614.65-1,440.46

Finding the Fourth Proportional to 2,619.31, 3,614.65 and 1,440.46

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Solution

The fourth proportional to 2,619.31, 3,614.65 and 1,440.46 is: 1,987.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.31 : 3,614.65 = 1,440.46 : x
  2. Step 2: Convert to fraction form
    2,619.31/3,614.65 = 1,440.46/x
  3. Step 3: Cross multiply
    2,619.31x = 3,614.65 × 1,440.46
  4. Step 4: Simplify right side
    2,619.31x = 5,206,758.74
  5. Step 5: Solve for x
    x = 5,206,758.74/2,619.31
  6. Step 6: Final answer
    x = 1,987.84

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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.