Home / 1,943.12-2,912.58-1,285.46

Finding the Fourth Proportional to 1,943.12, 2,912.58 and 1,285.46

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Solution

The fourth proportional to 1,943.12, 2,912.58 and 1,285.46 is: 1,926.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.12 : 2,912.58 = 1,285.46 : x
  2. Step 2: Convert to fraction form
    1,943.12/2,912.58 = 1,285.46/x
  3. Step 3: Cross multiply
    1,943.12x = 2,912.58 × 1,285.46
  4. Step 4: Simplify right side
    1,943.12x = 3,744,005.09
  5. Step 5: Solve for x
    x = 3,744,005.09/1,943.12
  6. Step 6: Final answer
    x = 1,926.80

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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.