Home / 7,178.80-10,766.98-1,984.68

Finding the Fourth Proportional to 7,178.80, 10,766.98 and 1,984.68

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Solution

The fourth proportional to 7,178.80, 10,766.98 and 1,984.68 is: 2,976.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.80 : 10,766.98 = 1,984.68 : x
  2. Step 2: Convert to fraction form
    7,178.80/10,766.98 = 1,984.68/x
  3. Step 3: Cross multiply
    7,178.80x = 10,766.98 × 1,984.68
  4. Step 4: Simplify right side
    7,178.80x = 21,369,009.87
  5. Step 5: Solve for x
    x = 21,369,009.87/7,178.80
  6. Step 6: Final answer
    x = 2,976.68

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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.