Home / 8,912.28-12,313.76-7,038.24

Finding the Fourth Proportional to 8,912.28, 12,313.76 and 7,038.24

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Solution

The fourth proportional to 8,912.28, 12,313.76 and 7,038.24 is: 9,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.28 : 12,313.76 = 7,038.24 : x
  2. Step 2: Convert to fraction form
    8,912.28/12,313.76 = 7,038.24/x
  3. Step 3: Cross multiply
    8,912.28x = 12,313.76 × 7,038.24
  4. Step 4: Simplify right side
    8,912.28x = 86,667,198.18
  5. Step 5: Solve for x
    x = 86,667,198.18/8,912.28
  6. Step 6: Final answer
    x = 9,724.47

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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.