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Finding the Fourth Proportional to 8,953.32, 12,354.64 and 5,175.89

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Solution

The fourth proportional to 8,953.32, 12,354.64 and 5,175.89 is: 7,142.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.32 : 12,354.64 = 5,175.89 : x
  2. Step 2: Convert to fraction form
    8,953.32/12,354.64 = 5,175.89/x
  3. Step 3: Cross multiply
    8,953.32x = 12,354.64 × 5,175.89
  4. Step 4: Simplify right side
    8,953.32x = 63,946,257.63
  5. Step 5: Solve for x
    x = 63,946,257.63/8,953.32
  6. Step 6: Final answer
    x = 7,142.18

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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.