Home / 5,320.08-7,980.12-2,721.60

Finding the Fourth Proportional to 5,320.08, 7,980.12 and 2,721.60

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Solution

The fourth proportional to 5,320.08, 7,980.12 and 2,721.60 is: 4,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.08 : 7,980.12 = 2,721.60 : x
  2. Step 2: Convert to fraction form
    5,320.08/7,980.12 = 2,721.60/x
  3. Step 3: Cross multiply
    5,320.08x = 7,980.12 × 2,721.60
  4. Step 4: Simplify right side
    5,320.08x = 21,718,694.59
  5. Step 5: Solve for x
    x = 21,718,694.59/5,320.08
  6. Step 6: Final answer
    x = 4,082.40

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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.