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Finding the Fourth Proportional to 8,963.10, 12,369.04 and 4,983.98

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Solution

The fourth proportional to 8,963.10, 12,369.04 and 4,983.98 is: 6,877.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.10 : 12,369.04 = 4,983.98 : x
  2. Step 2: Convert to fraction form
    8,963.10/12,369.04 = 4,983.98/x
  3. Step 3: Cross multiply
    8,963.10x = 12,369.04 × 4,983.98
  4. Step 4: Simplify right side
    8,963.10x = 61,646,973.67
  5. Step 5: Solve for x
    x = 61,646,973.67/8,963.10
  6. Step 6: Final answer
    x = 6,877.86

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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.