Home / 3,919.24-5,875.08-1,320.76

Finding the Fourth Proportional to 3,919.24, 5,875.08 and 1,320.76

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Solution

The fourth proportional to 3,919.24, 5,875.08 and 1,320.76 is: 1,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.24 : 5,875.08 = 1,320.76 : x
  2. Step 2: Convert to fraction form
    3,919.24/5,875.08 = 1,320.76/x
  3. Step 3: Cross multiply
    3,919.24x = 5,875.08 × 1,320.76
  4. Step 4: Simplify right side
    3,919.24x = 7,759,570.66
  5. Step 5: Solve for x
    x = 7,759,570.66/3,919.24
  6. Step 6: Final answer
    x = 1,979.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.