Home / 1,943.58-2,682.85-1,315.50

Finding the Fourth Proportional to 1,943.58, 2,682.85 and 1,315.50

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Solution

The fourth proportional to 1,943.58, 2,682.85 and 1,315.50 is: 1,815.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.58 : 2,682.85 = 1,315.50 : x
  2. Step 2: Convert to fraction form
    1,943.58/2,682.85 = 1,315.50/x
  3. Step 3: Cross multiply
    1,943.58x = 2,682.85 × 1,315.50
  4. Step 4: Simplify right side
    1,943.58x = 3,529,289.18
  5. Step 5: Solve for x
    x = 3,529,289.18/1,943.58
  6. Step 6: Final answer
    x = 1,815.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.