Home / 5,209.14-7,188.60-3,113.28

Finding the Fourth Proportional to 5,209.14, 7,188.60 and 3,113.28

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Solution

The fourth proportional to 5,209.14, 7,188.60 and 3,113.28 is: 4,296.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.14 : 7,188.60 = 3,113.28 : x
  2. Step 2: Convert to fraction form
    5,209.14/7,188.60 = 3,113.28/x
  3. Step 3: Cross multiply
    5,209.14x = 7,188.60 × 3,113.28
  4. Step 4: Simplify right side
    5,209.14x = 22,380,124.61
  5. Step 5: Solve for x
    x = 22,380,124.61/5,209.14
  6. Step 6: Final answer
    x = 4,296.32

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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.