Home / 7,426.80-11,138.04-2,808.72

Finding the Fourth Proportional to 7,426.80, 11,138.04 and 2,808.72

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Solution

The fourth proportional to 7,426.80, 11,138.04 and 2,808.72 is: 4,212.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,426.80 : 11,138.04 = 2,808.72 : x
  2. Step 2: Convert to fraction form
    7,426.80/11,138.04 = 2,808.72/x
  3. Step 3: Cross multiply
    7,426.80x = 11,138.04 × 2,808.72
  4. Step 4: Simplify right side
    7,426.80x = 31,283,635.71
  5. Step 5: Solve for x
    x = 31,283,635.71/7,426.80
  6. Step 6: Final answer
    x = 4,212.26

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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.