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Finding the Fourth Proportional to 8,009.40, 12,040.02 and 7,970.52

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Solution

The fourth proportional to 8,009.40, 12,040.02 and 7,970.52 is: 11,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,009.40 : 12,040.02 = 7,970.52 : x
  2. Step 2: Convert to fraction form
    8,009.40/12,040.02 = 7,970.52/x
  3. Step 3: Cross multiply
    8,009.40x = 12,040.02 × 7,970.52
  4. Step 4: Simplify right side
    8,009.40x = 95,965,220.21
  5. Step 5: Solve for x
    x = 95,965,220.21/8,009.40
  6. Step 6: Final answer
    x = 11,981.57

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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.