Home / 2,890.05-3,987.19-1,895.88

Finding the Fourth Proportional to 2,890.05, 3,987.19 and 1,895.88

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Solution

The fourth proportional to 2,890.05, 3,987.19 and 1,895.88 is: 2,615.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.05 : 3,987.19 = 1,895.88 : x
  2. Step 2: Convert to fraction form
    2,890.05/3,987.19 = 1,895.88/x
  3. Step 3: Cross multiply
    2,890.05x = 3,987.19 × 1,895.88
  4. Step 4: Simplify right side
    2,890.05x = 7,559,233.78
  5. Step 5: Solve for x
    x = 7,559,233.78/2,890.05
  6. Step 6: Final answer
    x = 2,615.61

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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.