Home / 5,227.76-7,212.54-2,988.05

Finding the Fourth Proportional to 5,227.76, 7,212.54 and 2,988.05

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Solution

The fourth proportional to 5,227.76, 7,212.54 and 2,988.05 is: 4,122.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227.76 : 7,212.54 = 2,988.05 : x
  2. Step 2: Convert to fraction form
    5,227.76/7,212.54 = 2,988.05/x
  3. Step 3: Cross multiply
    5,227.76x = 7,212.54 × 2,988.05
  4. Step 4: Simplify right side
    5,227.76x = 21,551,419.59
  5. Step 5: Solve for x
    x = 21,551,419.59/5,227.76
  6. Step 6: Final answer
    x = 4,122.50

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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.