Home / 1,119.12-1,679.52-571.77

Finding the Fourth Proportional to 1,119.12, 1,679.52 and 571.77

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Solution

The fourth proportional to 1,119.12, 1,679.52 and 571.77 is: 858.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.12 : 1,679.52 = 571.77 : x
  2. Step 2: Convert to fraction form
    1,119.12/1,679.52 = 571.77/x
  3. Step 3: Cross multiply
    1,119.12x = 1,679.52 × 571.77
  4. Step 4: Simplify right side
    1,119.12x = 960,299.15
  5. Step 5: Solve for x
    x = 960,299.15/1,119.12
  6. Step 6: Final answer
    x = 858.08

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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.