Home / 3,074.95-4,243.41-1,677.70

Finding the Fourth Proportional to 3,074.95, 4,243.41 and 1,677.70

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Solution

The fourth proportional to 3,074.95, 4,243.41 and 1,677.70 is: 2,315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.95 : 4,243.41 = 1,677.70 : x
  2. Step 2: Convert to fraction form
    3,074.95/4,243.41 = 1,677.70/x
  3. Step 3: Cross multiply
    3,074.95x = 4,243.41 × 1,677.70
  4. Step 4: Simplify right side
    3,074.95x = 7,119,147.74
  5. Step 5: Solve for x
    x = 7,119,147.74/3,074.95
  6. Step 6: Final answer
    x = 2,315.21

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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.