Home / 5,209.60-7,188.64-3,113.36

Finding the Fourth Proportional to 5,209.60, 7,188.64 and 3,113.36

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Solution

The fourth proportional to 5,209.60, 7,188.64 and 3,113.36 is: 4,296.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.60 : 7,188.64 = 3,113.36 : x
  2. Step 2: Convert to fraction form
    5,209.60/7,188.64 = 3,113.36/x
  3. Step 3: Cross multiply
    5,209.60x = 7,188.64 × 3,113.36
  4. Step 4: Simplify right side
    5,209.60x = 22,380,824.23
  5. Step 5: Solve for x
    x = 22,380,824.23/5,209.60
  6. Step 6: Final answer
    x = 4,296.07

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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.