Home / 2,135.90-3,205.47-1,440.92

Finding the Fourth Proportional to 2,135.90, 3,205.47 and 1,440.92

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Solution

The fourth proportional to 2,135.90, 3,205.47 and 1,440.92 is: 2,162.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.90 : 3,205.47 = 1,440.92 : x
  2. Step 2: Convert to fraction form
    2,135.90/3,205.47 = 1,440.92/x
  3. Step 3: Cross multiply
    2,135.90x = 3,205.47 × 1,440.92
  4. Step 4: Simplify right side
    2,135.90x = 4,618,825.83
  5. Step 5: Solve for x
    x = 4,618,825.83/2,135.90
  6. Step 6: Final answer
    x = 2,162.47

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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.