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Finding the Fourth Proportional to 5,448.78, 7,519.10 and 3,090.87

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Solution

The fourth proportional to 5,448.78, 7,519.10 and 3,090.87 is: 4,265.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,448.78 : 7,519.10 = 3,090.87 : x
  2. Step 2: Convert to fraction form
    5,448.78/7,519.10 = 3,090.87/x
  3. Step 3: Cross multiply
    5,448.78x = 7,519.10 × 3,090.87
  4. Step 4: Simplify right side
    5,448.78x = 23,240,545.16
  5. Step 5: Solve for x
    x = 23,240,545.16/5,448.78
  6. Step 6: Final answer
    x = 4,265.28

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1.5x scale

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.