Home / 5,270.24-7,272.16-3,145.28

Finding the Fourth Proportional to 5,270.24, 7,272.16 and 3,145.28

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Solution

The fourth proportional to 5,270.24, 7,272.16 and 3,145.28 is: 4,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.24 : 7,272.16 = 3,145.28 : x
  2. Step 2: Convert to fraction form
    5,270.24/7,272.16 = 3,145.28/x
  3. Step 3: Cross multiply
    5,270.24x = 7,272.16 × 3,145.28
  4. Step 4: Simplify right side
    5,270.24x = 22,872,979.40
  5. Step 5: Solve for x
    x = 22,872,979.40/5,270.24
  6. Step 6: Final answer
    x = 4,340.03

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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.