Home / 5,111.40-7,654.95-2,511.30

Finding the Fourth Proportional to 5,111.40, 7,654.95 and 2,511.30

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Solution

The fourth proportional to 5,111.40, 7,654.95 and 2,511.30 is: 3,760.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.40 : 7,654.95 = 2,511.30 : x
  2. Step 2: Convert to fraction form
    5,111.40/7,654.95 = 2,511.30/x
  3. Step 3: Cross multiply
    5,111.40x = 7,654.95 × 2,511.30
  4. Step 4: Simplify right side
    5,111.40x = 19,223,875.94
  5. Step 5: Solve for x
    x = 19,223,875.94/5,111.40
  6. Step 6: Final answer
    x = 3,760.98

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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.