Home / 5,272.40-7,272.96-3,147.32

Finding the Fourth Proportional to 5,272.40, 7,272.96 and 3,147.32

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Solution

The fourth proportional to 5,272.40, 7,272.96 and 3,147.32 is: 4,341.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.40 : 7,272.96 = 3,147.32 : x
  2. Step 2: Convert to fraction form
    5,272.40/7,272.96 = 3,147.32/x
  3. Step 3: Cross multiply
    5,272.40x = 7,272.96 × 3,147.32
  4. Step 4: Simplify right side
    5,272.40x = 22,890,332.47
  5. Step 5: Solve for x
    x = 22,890,332.47/5,272.40
  6. Step 6: Final answer
    x = 4,341.54

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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.