Home / 1,545.03-2,131.65-881.79

Finding the Fourth Proportional to 1,545.03, 2,131.65 and 881.79

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Solution

The fourth proportional to 1,545.03, 2,131.65 and 881.79 is: 1,216.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.03 : 2,131.65 = 881.79 : x
  2. Step 2: Convert to fraction form
    1,545.03/2,131.65 = 881.79/x
  3. Step 3: Cross multiply
    1,545.03x = 2,131.65 × 881.79
  4. Step 4: Simplify right side
    1,545.03x = 1,879,667.65
  5. Step 5: Solve for x
    x = 1,879,667.65/1,545.03
  6. Step 6: Final answer
    x = 1,216.59

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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.