Home / 1,868.40-2,579.31-1,449.99

Finding the Fourth Proportional to 1,868.40, 2,579.31 and 1,449.99

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Solution

The fourth proportional to 1,868.40, 2,579.31 and 1,449.99 is: 2,001.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.40 : 2,579.31 = 1,449.99 : x
  2. Step 2: Convert to fraction form
    1,868.40/2,579.31 = 1,449.99/x
  3. Step 3: Cross multiply
    1,868.40x = 2,579.31 × 1,449.99
  4. Step 4: Simplify right side
    1,868.40x = 3,739,973.71
  5. Step 5: Solve for x
    x = 3,739,973.71/1,868.40
  6. Step 6: Final answer
    x = 2,001.70

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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.