Home / 3,638.08-5,458.88-1,689.28

Finding the Fourth Proportional to 3,638.08, 5,458.88 and 1,689.28

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Solution

The fourth proportional to 3,638.08, 5,458.88 and 1,689.28 is: 2,534.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.08 : 5,458.88 = 1,689.28 : x
  2. Step 2: Convert to fraction form
    3,638.08/5,458.88 = 1,689.28/x
  3. Step 3: Cross multiply
    3,638.08x = 5,458.88 × 1,689.28
  4. Step 4: Simplify right side
    3,638.08x = 9,221,576.81
  5. Step 5: Solve for x
    x = 9,221,576.81/3,638.08
  6. Step 6: Final answer
    x = 2,534.74

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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.