Home / 5,638.83-8,458.35-3,315.15

Finding the Fourth Proportional to 5,638.83, 8,458.35 and 3,315.15

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Solution

The fourth proportional to 5,638.83, 8,458.35 and 3,315.15 is: 4,972.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.83 : 8,458.35 = 3,315.15 : x
  2. Step 2: Convert to fraction form
    5,638.83/8,458.35 = 3,315.15/x
  3. Step 3: Cross multiply
    5,638.83x = 8,458.35 × 3,315.15
  4. Step 4: Simplify right side
    5,638.83x = 28,040,699.00
  5. Step 5: Solve for x
    x = 28,040,699.00/5,638.83
  6. Step 6: Final answer
    x = 4,972.79

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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.