Home / 3,120.90-4,675.08-1,479.04

Finding the Fourth Proportional to 3,120.90, 4,675.08 and 1,479.04

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Solution

The fourth proportional to 3,120.90, 4,675.08 and 1,479.04 is: 2,215.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.90 : 4,675.08 = 1,479.04 : x
  2. Step 2: Convert to fraction form
    3,120.90/4,675.08 = 1,479.04/x
  3. Step 3: Cross multiply
    3,120.90x = 4,675.08 × 1,479.04
  4. Step 4: Simplify right side
    3,120.90x = 6,914,630.32
  5. Step 5: Solve for x
    x = 6,914,630.32/3,120.90
  6. Step 6: Final answer
    x = 2,215.59

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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.