Home / 1,511.19-2,265.03-862.38

Finding the Fourth Proportional to 1,511.19, 2,265.03 and 862.38

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Solution

The fourth proportional to 1,511.19, 2,265.03 and 862.38 is: 1,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.19 : 2,265.03 = 862.38 : x
  2. Step 2: Convert to fraction form
    1,511.19/2,265.03 = 862.38/x
  3. Step 3: Cross multiply
    1,511.19x = 2,265.03 × 862.38
  4. Step 4: Simplify right side
    1,511.19x = 1,953,316.57
  5. Step 5: Solve for x
    x = 1,953,316.57/1,511.19
  6. Step 6: Final answer
    x = 1,292.57

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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.