Home / 8,378.12-12,566.84-2,138.29

Finding the Fourth Proportional to 8,378.12, 12,566.84 and 2,138.29

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Solution

The fourth proportional to 8,378.12, 12,566.84 and 2,138.29 is: 3,207.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.12 : 12,566.84 = 2,138.29 : x
  2. Step 2: Convert to fraction form
    8,378.12/12,566.84 = 2,138.29/x
  3. Step 3: Cross multiply
    8,378.12x = 12,566.84 × 2,138.29
  4. Step 4: Simplify right side
    8,378.12x = 26,871,548.30
  5. Step 5: Solve for x
    x = 26,871,548.30/8,378.12
  6. Step 6: Final answer
    x = 3,207.35

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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.