Home / 5,165-7,747.56-1,269.40

Finding the Fourth Proportional to 5,165, 7,747.56 and 1,269.40

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Solution

The fourth proportional to 5,165, 7,747.56 and 1,269.40 is: 1,904.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165 : 7,747.56 = 1,269.40 : x
  2. Step 2: Convert to fraction form
    5,165/7,747.56 = 1,269.40/x
  3. Step 3: Cross multiply
    5,165x = 7,747.56 × 1,269.40
  4. Step 4: Simplify right side
    5,165x = 9,834,752.66
  5. Step 5: Solve for x
    x = 9,834,752.66/5,165
  6. Step 6: Final answer
    x = 1,904.11

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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.