Home / 2,912.46-4,366.42-1,985.72

Finding the Fourth Proportional to 2,912.46, 4,366.42 and 1,985.72

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Solution

The fourth proportional to 2,912.46, 4,366.42 and 1,985.72 is: 2,977.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.46 : 4,366.42 = 1,985.72 : x
  2. Step 2: Convert to fraction form
    2,912.46/4,366.42 = 1,985.72/x
  3. Step 3: Cross multiply
    2,912.46x = 4,366.42 × 1,985.72
  4. Step 4: Simplify right side
    2,912.46x = 8,670,477.59
  5. Step 5: Solve for x
    x = 8,670,477.59/2,912.46
  6. Step 6: Final answer
    x = 2,977.03

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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.