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Finding the Fourth Proportional to 8,471.30, 12,696.30 and 4,312.34

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Solution

The fourth proportional to 8,471.30, 12,696.30 and 4,312.34 is: 6,463.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.30 : 12,696.30 = 4,312.34 : x
  2. Step 2: Convert to fraction form
    8,471.30/12,696.30 = 4,312.34/x
  3. Step 3: Cross multiply
    8,471.30x = 12,696.30 × 4,312.34
  4. Step 4: Simplify right side
    8,471.30x = 54,750,762.34
  5. Step 5: Solve for x
    x = 54,750,762.34/8,471.30
  6. Step 6: Final answer
    x = 6,463.09

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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.