Home / 5,180.13-7,148.15-2,911.35

Finding the Fourth Proportional to 5,180.13, 7,148.15 and 2,911.35

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Solution

The fourth proportional to 5,180.13, 7,148.15 and 2,911.35 is: 4,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.13 : 7,148.15 = 2,911.35 : x
  2. Step 2: Convert to fraction form
    5,180.13/7,148.15 = 2,911.35/x
  3. Step 3: Cross multiply
    5,180.13x = 7,148.15 × 2,911.35
  4. Step 4: Simplify right side
    5,180.13x = 20,810,754.49
  5. Step 5: Solve for x
    x = 20,810,754.49/5,180.13
  6. Step 6: Final answer
    x = 4,017.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.