Home / 6,642.90-9,165.66-3,846.78

Finding the Fourth Proportional to 6,642.90, 9,165.66 and 3,846.78

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Solution

The fourth proportional to 6,642.90, 9,165.66 and 3,846.78 is: 5,307.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.90 : 9,165.66 = 3,846.78 : x
  2. Step 2: Convert to fraction form
    6,642.90/9,165.66 = 3,846.78/x
  3. Step 3: Cross multiply
    6,642.90x = 9,165.66 × 3,846.78
  4. Step 4: Simplify right side
    6,642.90x = 35,258,277.57
  5. Step 5: Solve for x
    x = 35,258,277.57/6,642.90
  6. Step 6: Final answer
    x = 5,307.66

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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.