Home / 3,128.61-4,318.86-1,950.46

Finding the Fourth Proportional to 3,128.61, 4,318.86 and 1,950.46

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Solution

The fourth proportional to 3,128.61, 4,318.86 and 1,950.46 is: 2,692.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.61 : 4,318.86 = 1,950.46 : x
  2. Step 2: Convert to fraction form
    3,128.61/4,318.86 = 1,950.46/x
  3. Step 3: Cross multiply
    3,128.61x = 4,318.86 × 1,950.46
  4. Step 4: Simplify right side
    3,128.61x = 8,423,763.68
  5. Step 5: Solve for x
    x = 8,423,763.68/3,128.61
  6. Step 6: Final answer
    x = 2,692.49

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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.