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Finding the Fourth Proportional to 8,465.77, 12,699.06 and 4,086.91

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Solution

The fourth proportional to 8,465.77, 12,699.06 and 4,086.91 is: 6,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.77 : 12,699.06 = 4,086.91 : x
  2. Step 2: Convert to fraction form
    8,465.77/12,699.06 = 4,086.91/x
  3. Step 3: Cross multiply
    8,465.77x = 12,699.06 × 4,086.91
  4. Step 4: Simplify right side
    8,465.77x = 51,899,915.30
  5. Step 5: Solve for x
    x = 51,899,915.30/8,465.77
  6. Step 6: Final answer
    x = 6,130.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.