Home / 1,643.28-2,464.38-547.35

Finding the Fourth Proportional to 1,643.28, 2,464.38 and 547.35

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Solution

The fourth proportional to 1,643.28, 2,464.38 and 547.35 is: 820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.28 : 2,464.38 = 547.35 : x
  2. Step 2: Convert to fraction form
    1,643.28/2,464.38 = 547.35/x
  3. Step 3: Cross multiply
    1,643.28x = 2,464.38 × 547.35
  4. Step 4: Simplify right side
    1,643.28x = 1,348,878.39
  5. Step 5: Solve for x
    x = 1,348,878.39/1,643.28
  6. Step 6: Final answer
    x = 820.85

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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.