Home / 2,518.89-3,778.29-669.95

Finding the Fourth Proportional to 2,518.89, 3,778.29 and 669.95

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Solution

The fourth proportional to 2,518.89, 3,778.29 and 669.95 is: 1,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.89 : 3,778.29 = 669.95 : x
  2. Step 2: Convert to fraction form
    2,518.89/3,778.29 = 669.95/x
  3. Step 3: Cross multiply
    2,518.89x = 3,778.29 × 669.95
  4. Step 4: Simplify right side
    2,518.89x = 2,531,246.49
  5. Step 5: Solve for x
    x = 2,531,246.49/2,518.89
  6. Step 6: Final answer
    x = 1,004.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.