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Finding the Fourth Proportional to 8,880.84, 12,256.52 and 6,638.86

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Solution

The fourth proportional to 8,880.84, 12,256.52 and 6,638.86 is: 9,162.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.84 : 12,256.52 = 6,638.86 : x
  2. Step 2: Convert to fraction form
    8,880.84/12,256.52 = 6,638.86/x
  3. Step 3: Cross multiply
    8,880.84x = 12,256.52 × 6,638.86
  4. Step 4: Simplify right side
    8,880.84x = 81,369,302.49
  5. Step 5: Solve for x
    x = 81,369,302.49/8,880.84
  6. Step 6: Final answer
    x = 9,162.34

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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.