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Finding the Fourth Proportional to 8,038.28, 12,030.42 and 7,731.56

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Solution

The fourth proportional to 8,038.28, 12,030.42 and 7,731.56 is: 11,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,038.28 : 12,030.42 = 7,731.56 : x
  2. Step 2: Convert to fraction form
    8,038.28/12,030.42 = 7,731.56/x
  3. Step 3: Cross multiply
    8,038.28x = 12,030.42 × 7,731.56
  4. Step 4: Simplify right side
    8,038.28x = 93,013,914.06
  5. Step 5: Solve for x
    x = 93,013,914.06/8,038.28
  6. Step 6: Final answer
    x = 11,571.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.