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Finding the Fourth Proportional to 2,775.01, 4,159.04 and 1,388.74

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Solution

The fourth proportional to 2,775.01, 4,159.04 and 1,388.74 is: 2,081.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.01 : 4,159.04 = 1,388.74 : x
  2. Step 2: Convert to fraction form
    2,775.01/4,159.04 = 1,388.74/x
  3. Step 3: Cross multiply
    2,775.01x = 4,159.04 × 1,388.74
  4. Step 4: Simplify right side
    2,775.01x = 5,775,825.21
  5. Step 5: Solve for x
    x = 5,775,825.21/2,775.01
  6. Step 6: Final answer
    x = 2,081.37

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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.