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Finding the Fourth Proportional to 7,901.84, 11,844.05 and 5,720.10

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Solution

The fourth proportional to 7,901.84, 11,844.05 and 5,720.10 is: 8,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.84 : 11,844.05 = 5,720.10 : x
  2. Step 2: Convert to fraction form
    7,901.84/11,844.05 = 5,720.10/x
  3. Step 3: Cross multiply
    7,901.84x = 11,844.05 × 5,720.10
  4. Step 4: Simplify right side
    7,901.84x = 67,749,121.80
  5. Step 5: Solve for x
    x = 67,749,121.80/7,901.84
  6. Step 6: Final answer
    x = 8,573.85

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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.