Home / 1,812.40-2,498.42-1,439.46

Finding the Fourth Proportional to 1,812.40, 2,498.42 and 1,439.46

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Solution

The fourth proportional to 1,812.40, 2,498.42 and 1,439.46 is: 1,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.40 : 2,498.42 = 1,439.46 : x
  2. Step 2: Convert to fraction form
    1,812.40/2,498.42 = 1,439.46/x
  3. Step 3: Cross multiply
    1,812.40x = 2,498.42 × 1,439.46
  4. Step 4: Simplify right side
    1,812.40x = 3,596,375.65
  5. Step 5: Solve for x
    x = 3,596,375.65/1,812.40
  6. Step 6: Final answer
    x = 1,984.32

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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.