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Finding the Fourth Proportional to 7,963.84, 10,990.24 and 4,820.16

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Solution

The fourth proportional to 7,963.84, 10,990.24 and 4,820.16 is: 6,651.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.84 : 10,990.24 = 4,820.16 : x
  2. Step 2: Convert to fraction form
    7,963.84/10,990.24 = 4,820.16/x
  3. Step 3: Cross multiply
    7,963.84x = 10,990.24 × 4,820.16
  4. Step 4: Simplify right side
    7,963.84x = 52,974,715.24
  5. Step 5: Solve for x
    x = 52,974,715.24/7,963.84
  6. Step 6: Final answer
    x = 6,651.91

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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.