Home / 2,803.23-3,863.70-1,917.50

Finding the Fourth Proportional to 2,803.23, 3,863.70 and 1,917.50

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Solution

The fourth proportional to 2,803.23, 3,863.70 and 1,917.50 is: 2,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.23 : 3,863.70 = 1,917.50 : x
  2. Step 2: Convert to fraction form
    2,803.23/3,863.70 = 1,917.50/x
  3. Step 3: Cross multiply
    2,803.23x = 3,863.70 × 1,917.50
  4. Step 4: Simplify right side
    2,803.23x = 7,408,625.43
  5. Step 5: Solve for x
    x = 7,408,625.43/2,803.23
  6. Step 6: Final answer
    x = 2,642.89

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1.5x scale

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.