Home / 1,890.42-2,835.87-1,100.15

Finding the Fourth Proportional to 1,890.42, 2,835.87 and 1,100.15

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Solution

The fourth proportional to 1,890.42, 2,835.87 and 1,100.15 is: 1,650.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.42 : 2,835.87 = 1,100.15 : x
  2. Step 2: Convert to fraction form
    1,890.42/2,835.87 = 1,100.15/x
  3. Step 3: Cross multiply
    1,890.42x = 2,835.87 × 1,100.15
  4. Step 4: Simplify right side
    1,890.42x = 3,119,862.70
  5. Step 5: Solve for x
    x = 3,119,862.70/1,890.42
  6. Step 6: Final answer
    x = 1,650.35

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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.