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Finding the Fourth Proportional to 7,317.76, 10,979.10 and 2,320.95

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Solution

The fourth proportional to 7,317.76, 10,979.10 and 2,320.95 is: 3,482.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,317.76 : 10,979.10 = 2,320.95 : x
  2. Step 2: Convert to fraction form
    7,317.76/10,979.10 = 2,320.95/x
  3. Step 3: Cross multiply
    7,317.76x = 10,979.10 × 2,320.95
  4. Step 4: Simplify right side
    7,317.76x = 25,481,887.25
  5. Step 5: Solve for x
    x = 25,481,887.25/7,317.76
  6. Step 6: Final answer
    x = 3,482.20

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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.