Home / 3,086.12-4,622.50-1,916.40

Finding the Fourth Proportional to 3,086.12, 4,622.50 and 1,916.40

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Solution

The fourth proportional to 3,086.12, 4,622.50 and 1,916.40 is: 2,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.12 : 4,622.50 = 1,916.40 : x
  2. Step 2: Convert to fraction form
    3,086.12/4,622.50 = 1,916.40/x
  3. Step 3: Cross multiply
    3,086.12x = 4,622.50 × 1,916.40
  4. Step 4: Simplify right side
    3,086.12x = 8,858,571.54
  5. Step 5: Solve for x
    x = 8,858,571.54/3,086.12
  6. Step 6: Final answer
    x = 2,870.45

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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.