Home / 3,240.50-4,471.71-1,913.90

Finding the Fourth Proportional to 3,240.50, 4,471.71 and 1,913.90

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Solution

The fourth proportional to 3,240.50, 4,471.71 and 1,913.90 is: 2,641.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.50 : 4,471.71 = 1,913.90 : x
  2. Step 2: Convert to fraction form
    3,240.50/4,471.71 = 1,913.90/x
  3. Step 3: Cross multiply
    3,240.50x = 4,471.71 × 1,913.90
  4. Step 4: Simplify right side
    3,240.50x = 8,558,405.77
  5. Step 5: Solve for x
    x = 8,558,405.77/3,240.50
  6. Step 6: Final answer
    x = 2,641.08

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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.