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Finding the Fourth Proportional to 2,709.03, 4,062.74 and 977.25

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Solution

The fourth proportional to 2,709.03, 4,062.74 and 977.25 is: 1,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.03 : 4,062.74 = 977.25 : x
  2. Step 2: Convert to fraction form
    2,709.03/4,062.74 = 977.25/x
  3. Step 3: Cross multiply
    2,709.03x = 4,062.74 × 977.25
  4. Step 4: Simplify right side
    2,709.03x = 3,970,307.78
  5. Step 5: Solve for x
    x = 3,970,307.78/2,709.03
  6. Step 6: Final answer
    x = 1,465.58

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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.