Home / 1,511.19-2,084.85-847.89

Finding the Fourth Proportional to 1,511.19, 2,084.85 and 847.89

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Solution

The fourth proportional to 1,511.19, 2,084.85 and 847.89 is: 1,169.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.19 : 2,084.85 = 847.89 : x
  2. Step 2: Convert to fraction form
    1,511.19/2,084.85 = 847.89/x
  3. Step 3: Cross multiply
    1,511.19x = 2,084.85 × 847.89
  4. Step 4: Simplify right side
    1,511.19x = 1,767,723.47
  5. Step 5: Solve for x
    x = 1,767,723.47/1,511.19
  6. Step 6: Final answer
    x = 1,169.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.