Home / 6,455.90-9,661.45-3,860.70

Finding the Fourth Proportional to 6,455.90, 9,661.45 and 3,860.70

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Solution

The fourth proportional to 6,455.90, 9,661.45 and 3,860.70 is: 5,777.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.90 : 9,661.45 = 3,860.70 : x
  2. Step 2: Convert to fraction form
    6,455.90/9,661.45 = 3,860.70/x
  3. Step 3: Cross multiply
    6,455.90x = 9,661.45 × 3,860.70
  4. Step 4: Simplify right side
    6,455.90x = 37,299,960.02
  5. Step 5: Solve for x
    x = 37,299,960.02/6,455.90
  6. Step 6: Final answer
    x = 5,777.65

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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.