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Finding the Fourth Proportional to 8,368.85, 12,559.34 and 6,745

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Solution

The fourth proportional to 8,368.85, 12,559.34 and 6,745 is: 10,122.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.85 : 12,559.34 = 6,745 : x
  2. Step 2: Convert to fraction form
    8,368.85/12,559.34 = 6,745/x
  3. Step 3: Cross multiply
    8,368.85x = 12,559.34 × 6,745
  4. Step 4: Simplify right side
    8,368.85x = 84,712,748.30
  5. Step 5: Solve for x
    x = 84,712,748.30/8,368.85
  6. Step 6: Final answer
    x = 10,122.39

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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.