Home / 3,438.40-4,744.98-1,866.49

Finding the Fourth Proportional to 3,438.40, 4,744.98 and 1,866.49

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Solution

The fourth proportional to 3,438.40, 4,744.98 and 1,866.49 is: 2,575.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.40 : 4,744.98 = 1,866.49 : x
  2. Step 2: Convert to fraction form
    3,438.40/4,744.98 = 1,866.49/x
  3. Step 3: Cross multiply
    3,438.40x = 4,744.98 × 1,866.49
  4. Step 4: Simplify right side
    3,438.40x = 8,856,472.55
  5. Step 5: Solve for x
    x = 8,856,472.55/3,438.40
  6. Step 6: Final answer
    x = 2,575.75

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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.