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Finding the Fourth Proportional to 8,402.85, 12,604.98 and 2,559.51

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Solution

The fourth proportional to 8,402.85, 12,604.98 and 2,559.51 is: 3,839.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,402.85 : 12,604.98 = 2,559.51 : x
  2. Step 2: Convert to fraction form
    8,402.85/12,604.98 = 2,559.51/x
  3. Step 3: Cross multiply
    8,402.85x = 12,604.98 × 2,559.51
  4. Step 4: Simplify right side
    8,402.85x = 32,262,572.36
  5. Step 5: Solve for x
    x = 32,262,572.36/8,402.85
  6. Step 6: Final answer
    x = 3,839.48

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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.