Home / 1,571.12-2,358.09-876.77

Finding the Fourth Proportional to 1,571.12, 2,358.09 and 876.77

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Solution

The fourth proportional to 1,571.12, 2,358.09 and 876.77 is: 1,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.12 : 2,358.09 = 876.77 : x
  2. Step 2: Convert to fraction form
    1,571.12/2,358.09 = 876.77/x
  3. Step 3: Cross multiply
    1,571.12x = 2,358.09 × 876.77
  4. Step 4: Simplify right side
    1,571.12x = 2,067,502.57
  5. Step 5: Solve for x
    x = 2,067,502.57/1,571.12
  6. Step 6: Final answer
    x = 1,315.94

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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.