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Finding the Fourth Proportional to 5,010.78, 7,505.90 and 2,814.90

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Solution

The fourth proportional to 5,010.78, 7,505.90 and 2,814.90 is: 4,216.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,010.78 : 7,505.90 = 2,814.90 : x
  2. Step 2: Convert to fraction form
    5,010.78/7,505.90 = 2,814.90/x
  3. Step 3: Cross multiply
    5,010.78x = 7,505.90 × 2,814.90
  4. Step 4: Simplify right side
    5,010.78x = 21,128,357.91
  5. Step 5: Solve for x
    x = 21,128,357.91/5,010.78
  6. Step 6: Final answer
    x = 4,216.58

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1.5x scale

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.