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Finding the Fourth Proportional to 8,963.43, 12,369.74 and 4,984.40

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Solution

The fourth proportional to 8,963.43, 12,369.74 and 4,984.40 is: 6,878.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.43 : 12,369.74 = 4,984.40 : x
  2. Step 2: Convert to fraction form
    8,963.43/12,369.74 = 4,984.40/x
  3. Step 3: Cross multiply
    8,963.43x = 12,369.74 × 4,984.40
  4. Step 4: Simplify right side
    8,963.43x = 61,655,645.29
  5. Step 5: Solve for x
    x = 61,655,645.29/8,963.43
  6. Step 6: Final answer
    x = 6,878.58

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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.