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Finding the Fourth Proportional to 8,586.71, 12,880.06 and 5,302.11

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Solution

The fourth proportional to 8,586.71, 12,880.06 and 5,302.11 is: 7,953.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.71 : 12,880.06 = 5,302.11 : x
  2. Step 2: Convert to fraction form
    8,586.71/12,880.06 = 5,302.11/x
  3. Step 3: Cross multiply
    8,586.71x = 12,880.06 × 5,302.11
  4. Step 4: Simplify right side
    8,586.71x = 68,291,487.35
  5. Step 5: Solve for x
    x = 68,291,487.35/8,586.71
  6. Step 6: Final answer
    x = 7,953.16

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Half scale
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Double scale
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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.