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Finding the Fourth Proportional to 8,612.77, 11,885.64 and 4,886.77

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Solution

The fourth proportional to 8,612.77, 11,885.64 and 4,886.77 is: 6,743.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.77 : 11,885.64 = 4,886.77 : x
  2. Step 2: Convert to fraction form
    8,612.77/11,885.64 = 4,886.77/x
  3. Step 3: Cross multiply
    8,612.77x = 11,885.64 × 4,886.77
  4. Step 4: Simplify right side
    8,612.77x = 58,082,388.98
  5. Step 5: Solve for x
    x = 58,082,388.98/8,612.77
  6. Step 6: Final answer
    x = 6,743.75

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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.