Home / 7,972.78-11,017.60-5,979.87

Finding the Fourth Proportional to 7,972.78, 11,017.60 and 5,979.87

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Solution

The fourth proportional to 7,972.78, 11,017.60 and 5,979.87 is: 8,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.78 : 11,017.60 = 5,979.87 : x
  2. Step 2: Convert to fraction form
    7,972.78/11,017.60 = 5,979.87/x
  3. Step 3: Cross multiply
    7,972.78x = 11,017.60 × 5,979.87
  4. Step 4: Simplify right side
    7,972.78x = 65,883,858.21
  5. Step 5: Solve for x
    x = 65,883,858.21/7,972.78
  6. Step 6: Final answer
    x = 8,263.60

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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.