Home / 7,220.10-9,963.73-3,908.10

Finding the Fourth Proportional to 7,220.10, 9,963.73 and 3,908.10

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Solution

The fourth proportional to 7,220.10, 9,963.73 and 3,908.10 is: 5,393.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.10 : 9,963.73 = 3,908.10 : x
  2. Step 2: Convert to fraction form
    7,220.10/9,963.73 = 3,908.10/x
  3. Step 3: Cross multiply
    7,220.10x = 9,963.73 × 3,908.10
  4. Step 4: Simplify right side
    7,220.10x = 38,939,253.21
  5. Step 5: Solve for x
    x = 38,939,253.21/7,220.10
  6. Step 6: Final answer
    x = 5,393.17

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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.