Home / 3,485.90-5,229.10-1,538.12

Finding the Fourth Proportional to 3,485.90, 5,229.10 and 1,538.12

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Solution

The fourth proportional to 3,485.90, 5,229.10 and 1,538.12 is: 2,307.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.90 : 5,229.10 = 1,538.12 : x
  2. Step 2: Convert to fraction form
    3,485.90/5,229.10 = 1,538.12/x
  3. Step 3: Cross multiply
    3,485.90x = 5,229.10 × 1,538.12
  4. Step 4: Simplify right side
    3,485.90x = 8,042,983.29
  5. Step 5: Solve for x
    x = 8,042,983.29/3,485.90
  6. Step 6: Final answer
    x = 2,307.29

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1.5x scale

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.