Home / 5,120.15-7,672.40-3,448.08

Finding the Fourth Proportional to 5,120.15, 7,672.40 and 3,448.08

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Solution

The fourth proportional to 5,120.15, 7,672.40 and 3,448.08 is: 5,166.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.15 : 7,672.40 = 3,448.08 : x
  2. Step 2: Convert to fraction form
    5,120.15/7,672.40 = 3,448.08/x
  3. Step 3: Cross multiply
    5,120.15x = 7,672.40 × 3,448.08
  4. Step 4: Simplify right side
    5,120.15x = 26,455,031.75
  5. Step 5: Solve for x
    x = 26,455,031.75/5,120.15
  6. Step 6: Final answer
    x = 5,166.85

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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.