Home / 4,988.50-6,884.61-2,780.50

Finding the Fourth Proportional to 4,988.50, 6,884.61 and 2,780.50

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Solution

The fourth proportional to 4,988.50, 6,884.61 and 2,780.50 is: 3,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.50 : 6,884.61 = 2,780.50 : x
  2. Step 2: Convert to fraction form
    4,988.50/6,884.61 = 2,780.50/x
  3. Step 3: Cross multiply
    4,988.50x = 6,884.61 × 2,780.50
  4. Step 4: Simplify right side
    4,988.50x = 19,142,658.11
  5. Step 5: Solve for x
    x = 19,142,658.11/4,988.50
  6. Step 6: Final answer
    x = 3,837.36

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Why These Related Problems?

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