Home / 5,536.32-7,640.24-3,178.61

Finding the Fourth Proportional to 5,536.32, 7,640.24 and 3,178.61

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Solution

The fourth proportional to 5,536.32, 7,640.24 and 3,178.61 is: 4,386.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,536.32 : 7,640.24 = 3,178.61 : x
  2. Step 2: Convert to fraction form
    5,536.32/7,640.24 = 3,178.61/x
  3. Step 3: Cross multiply
    5,536.32x = 7,640.24 × 3,178.61
  4. Step 4: Simplify right side
    5,536.32x = 24,285,346.47
  5. Step 5: Solve for x
    x = 24,285,346.47/5,536.32
  6. Step 6: Final answer
    x = 4,386.55

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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.