Home / 7,821.68-11,732.57-1,898.55

Finding the Fourth Proportional to 7,821.68, 11,732.57 and 1,898.55

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Solution

The fourth proportional to 7,821.68, 11,732.57 and 1,898.55 is: 2,847.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.68 : 11,732.57 = 1,898.55 : x
  2. Step 2: Convert to fraction form
    7,821.68/11,732.57 = 1,898.55/x
  3. Step 3: Cross multiply
    7,821.68x = 11,732.57 × 1,898.55
  4. Step 4: Simplify right side
    7,821.68x = 22,274,870.77
  5. Step 5: Solve for x
    x = 22,274,870.77/7,821.68
  6. Step 6: Final answer
    x = 2,847.84

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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.