Home / 7,320.45-10,102.15-3,963.21

Finding the Fourth Proportional to 7,320.45, 10,102.15 and 3,963.21

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Solution

The fourth proportional to 7,320.45, 10,102.15 and 3,963.21 is: 5,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.45 : 10,102.15 = 3,963.21 : x
  2. Step 2: Convert to fraction form
    7,320.45/10,102.15 = 3,963.21/x
  3. Step 3: Cross multiply
    7,320.45x = 10,102.15 × 3,963.21
  4. Step 4: Simplify right side
    7,320.45x = 40,036,941.90
  5. Step 5: Solve for x
    x = 40,036,941.90/7,320.45
  6. Step 6: Final answer
    x = 5,469.19

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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.