Home / 2,895.99-3,990.38-1,962.87

Finding the Fourth Proportional to 2,895.99, 3,990.38 and 1,962.87

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Solution

The fourth proportional to 2,895.99, 3,990.38 and 1,962.87 is: 2,704.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,895.99 : 3,990.38 = 1,962.87 : x
  2. Step 2: Convert to fraction form
    2,895.99/3,990.38 = 1,962.87/x
  3. Step 3: Cross multiply
    2,895.99x = 3,990.38 × 1,962.87
  4. Step 4: Simplify right side
    2,895.99x = 7,832,587.38
  5. Step 5: Solve for x
    x = 7,832,587.38/2,895.99
  6. Step 6: Final answer
    x = 2,704.63

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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.