Home / 7,917.28-10,921.08-5,228.52

Finding the Fourth Proportional to 7,917.28, 10,921.08 and 5,228.52

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Solution

The fourth proportional to 7,917.28, 10,921.08 and 5,228.52 is: 7,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.28 : 10,921.08 = 5,228.52 : x
  2. Step 2: Convert to fraction form
    7,917.28/10,921.08 = 5,228.52/x
  3. Step 3: Cross multiply
    7,917.28x = 10,921.08 × 5,228.52
  4. Step 4: Simplify right side
    7,917.28x = 57,101,034.44
  5. Step 5: Solve for x
    x = 57,101,034.44/7,917.28
  6. Step 6: Final answer
    x = 7,212.21

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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.