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Finding the Fourth Proportional to 4,890.78, 7,337.25 and 2,698.38

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Solution

The fourth proportional to 4,890.78, 7,337.25 and 2,698.38 is: 4,048.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.78 : 7,337.25 = 2,698.38 : x
  2. Step 2: Convert to fraction form
    4,890.78/7,337.25 = 2,698.38/x
  3. Step 3: Cross multiply
    4,890.78x = 7,337.25 × 2,698.38
  4. Step 4: Simplify right side
    4,890.78x = 19,798,688.66
  5. Step 5: Solve for x
    x = 19,798,688.66/4,890.78
  6. Step 6: Final answer
    x = 4,048.17

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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.