Home / 5,013.78-7,510.40-2,817.90

Finding the Fourth Proportional to 5,013.78, 7,510.40 and 2,817.90

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Solution

The fourth proportional to 5,013.78, 7,510.40 and 2,817.90 is: 4,221.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,013.78 : 7,510.40 = 2,817.90 : x
  2. Step 2: Convert to fraction form
    5,013.78/7,510.40 = 2,817.90/x
  3. Step 3: Cross multiply
    5,013.78x = 7,510.40 × 2,817.90
  4. Step 4: Simplify right side
    5,013.78x = 21,163,556.16
  5. Step 5: Solve for x
    x = 21,163,556.16/5,013.78
  6. Step 6: Final answer
    x = 4,221.08

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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.