Home / 3,426.64-5,140.80-1,118.08

Finding the Fourth Proportional to 3,426.64, 5,140.80 and 1,118.08

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Solution

The fourth proportional to 3,426.64, 5,140.80 and 1,118.08 is: 1,677.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.64 : 5,140.80 = 1,118.08 : x
  2. Step 2: Convert to fraction form
    3,426.64/5,140.80 = 1,118.08/x
  3. Step 3: Cross multiply
    3,426.64x = 5,140.80 × 1,118.08
  4. Step 4: Simplify right side
    3,426.64x = 5,747,825.66
  5. Step 5: Solve for x
    x = 5,747,825.66/3,426.64
  6. Step 6: Final answer
    x = 1,677.39

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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.