Home / 7,106.72-9,807.48-3,963.20

Finding the Fourth Proportional to 7,106.72, 9,807.48 and 3,963.20

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Solution

The fourth proportional to 7,106.72, 9,807.48 and 3,963.20 is: 5,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.72 : 9,807.48 = 3,963.20 : x
  2. Step 2: Convert to fraction form
    7,106.72/9,807.48 = 3,963.20/x
  3. Step 3: Cross multiply
    7,106.72x = 9,807.48 × 3,963.20
  4. Step 4: Simplify right side
    7,106.72x = 38,869,004.74
  5. Step 5: Solve for x
    x = 38,869,004.74/7,106.72
  6. Step 6: Final answer
    x = 5,469.33

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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.