Home / 7,427.08-10,255.68-5,309.20

Finding the Fourth Proportional to 7,427.08, 10,255.68 and 5,309.20

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Solution

The fourth proportional to 7,427.08, 10,255.68 and 5,309.20 is: 7,331.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.08 : 10,255.68 = 5,309.20 : x
  2. Step 2: Convert to fraction form
    7,427.08/10,255.68 = 5,309.20/x
  3. Step 3: Cross multiply
    7,427.08x = 10,255.68 × 5,309.20
  4. Step 4: Simplify right side
    7,427.08x = 54,449,456.26
  5. Step 5: Solve for x
    x = 54,449,456.26/7,427.08
  6. Step 6: Final answer
    x = 7,331.21

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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.