Home / 1,699.20-2,344.32-1,078.56

Finding the Fourth Proportional to 1,699.20, 2,344.32 and 1,078.56

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Solution

The fourth proportional to 1,699.20, 2,344.32 and 1,078.56 is: 1,488.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.20 : 2,344.32 = 1,078.56 : x
  2. Step 2: Convert to fraction form
    1,699.20/2,344.32 = 1,078.56/x
  3. Step 3: Cross multiply
    1,699.20x = 2,344.32 × 1,078.56
  4. Step 4: Simplify right side
    1,699.20x = 2,528,489.78
  5. Step 5: Solve for x
    x = 2,528,489.78/1,699.20
  6. Step 6: Final answer
    x = 1,488.05

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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.