Home / 1,511.11-2,266.43-415.58

Finding the Fourth Proportional to 1,511.11, 2,266.43 and 415.58

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Solution

The fourth proportional to 1,511.11, 2,266.43 and 415.58 is: 623.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.11 : 2,266.43 = 415.58 : x
  2. Step 2: Convert to fraction form
    1,511.11/2,266.43 = 415.58/x
  3. Step 3: Cross multiply
    1,511.11x = 2,266.43 × 415.58
  4. Step 4: Simplify right side
    1,511.11x = 941,886.57
  5. Step 5: Solve for x
    x = 941,886.57/1,511.11
  6. Step 6: Final answer
    x = 623.31

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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.