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Finding the Fourth Proportional to 8,391.98, 12,586.08 and 2,845.10

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Solution

The fourth proportional to 8,391.98, 12,586.08 and 2,845.10 is: 4,267.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.98 : 12,586.08 = 2,845.10 : x
  2. Step 2: Convert to fraction form
    8,391.98/12,586.08 = 2,845.10/x
  3. Step 3: Cross multiply
    8,391.98x = 12,586.08 × 2,845.10
  4. Step 4: Simplify right side
    8,391.98x = 35,808,656.21
  5. Step 5: Solve for x
    x = 35,808,656.21/8,391.98
  6. Step 6: Final answer
    x = 4,267.01

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Similar ratio
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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.