Home / 7,686.18-11,528.12-2,138.94

Finding the Fourth Proportional to 7,686.18, 11,528.12 and 2,138.94

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Solution

The fourth proportional to 7,686.18, 11,528.12 and 2,138.94 is: 3,208.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.18 : 11,528.12 = 2,138.94 : x
  2. Step 2: Convert to fraction form
    7,686.18/11,528.12 = 2,138.94/x
  3. Step 3: Cross multiply
    7,686.18x = 11,528.12 × 2,138.94
  4. Step 4: Simplify right side
    7,686.18x = 24,657,956.99
  5. Step 5: Solve for x
    x = 24,657,956.99/7,686.18
  6. Step 6: Final answer
    x = 3,208.09

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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.