Home / 5,160.60-7,121.76-3,036.28

Finding the Fourth Proportional to 5,160.60, 7,121.76 and 3,036.28

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Solution

The fourth proportional to 5,160.60, 7,121.76 and 3,036.28 is: 4,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.60 : 7,121.76 = 3,036.28 : x
  2. Step 2: Convert to fraction form
    5,160.60/7,121.76 = 3,036.28/x
  3. Step 3: Cross multiply
    5,160.60x = 7,121.76 × 3,036.28
  4. Step 4: Simplify right side
    5,160.60x = 21,623,657.45
  5. Step 5: Solve for x
    x = 21,623,657.45/5,160.60
  6. Step 6: Final answer
    x = 4,190.14

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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.