Home / 5,320.25-7,980.38-1,672.25

Finding the Fourth Proportional to 5,320.25, 7,980.38 and 1,672.25

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Solution

The fourth proportional to 5,320.25, 7,980.38 and 1,672.25 is: 2,508.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.25 : 7,980.38 = 1,672.25 : x
  2. Step 2: Convert to fraction form
    5,320.25/7,980.38 = 1,672.25/x
  3. Step 3: Cross multiply
    5,320.25x = 7,980.38 × 1,672.25
  4. Step 4: Simplify right side
    5,320.25x = 13,345,182.09
  5. Step 5: Solve for x
    x = 13,345,182.09/5,320.25
  6. Step 6: Final answer
    x = 2,508.38

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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.