Home / 2,890.87-4,336.30-1,431.05

Finding the Fourth Proportional to 2,890.87, 4,336.30 and 1,431.05

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Solution

The fourth proportional to 2,890.87, 4,336.30 and 1,431.05 is: 2,146.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.87 : 4,336.30 = 1,431.05 : x
  2. Step 2: Convert to fraction form
    2,890.87/4,336.30 = 1,431.05/x
  3. Step 3: Cross multiply
    2,890.87x = 4,336.30 × 1,431.05
  4. Step 4: Simplify right side
    2,890.87x = 6,205,440.43
  5. Step 5: Solve for x
    x = 6,205,440.43/2,890.87
  6. Step 6: Final answer
    x = 2,146.57

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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.