Home / 6,912.30-10,368.45-1,981.83

Finding the Fourth Proportional to 6,912.30, 10,368.45 and 1,981.83

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Solution

The fourth proportional to 6,912.30, 10,368.45 and 1,981.83 is: 2,972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.30 : 10,368.45 = 1,981.83 : x
  2. Step 2: Convert to fraction form
    6,912.30/10,368.45 = 1,981.83/x
  3. Step 3: Cross multiply
    6,912.30x = 10,368.45 × 1,981.83
  4. Step 4: Simplify right side
    6,912.30x = 20,548,505.26
  5. Step 5: Solve for x
    x = 20,548,505.26/6,912.30
  6. Step 6: Final answer
    x = 2,972.75

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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.