Home / 3,178.32-4,385.91-1,761.92

Finding the Fourth Proportional to 3,178.32, 4,385.91 and 1,761.92

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Solution

The fourth proportional to 3,178.32, 4,385.91 and 1,761.92 is: 2,431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.32 : 4,385.91 = 1,761.92 : x
  2. Step 2: Convert to fraction form
    3,178.32/4,385.91 = 1,761.92/x
  3. Step 3: Cross multiply
    3,178.32x = 4,385.91 × 1,761.92
  4. Step 4: Simplify right side
    3,178.32x = 7,727,633.51
  5. Step 5: Solve for x
    x = 7,727,633.51/3,178.32
  6. Step 6: Final answer
    x = 2,431.36

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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.