Home / 1,642.93-2,465.30-1,338.57

Finding the Fourth Proportional to 1,642.93, 2,465.30 and 1,338.57

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Solution

The fourth proportional to 1,642.93, 2,465.30 and 1,338.57 is: 2,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.93 : 2,465.30 = 1,338.57 : x
  2. Step 2: Convert to fraction form
    1,642.93/2,465.30 = 1,338.57/x
  3. Step 3: Cross multiply
    1,642.93x = 2,465.30 × 1,338.57
  4. Step 4: Simplify right side
    1,642.93x = 3,299,979.97
  5. Step 5: Solve for x
    x = 3,299,979.97/1,642.93
  6. Step 6: Final answer
    x = 2,008.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.