Home / 2,639.74-3,643.23-1,520.46

Finding the Fourth Proportional to 2,639.74, 3,643.23 and 1,520.46

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Solution

The fourth proportional to 2,639.74, 3,643.23 and 1,520.46 is: 2,098.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.74 : 3,643.23 = 1,520.46 : x
  2. Step 2: Convert to fraction form
    2,639.74/3,643.23 = 1,520.46/x
  3. Step 3: Cross multiply
    2,639.74x = 3,643.23 × 1,520.46
  4. Step 4: Simplify right side
    2,639.74x = 5,539,377.88
  5. Step 5: Solve for x
    x = 5,539,377.88/2,639.74
  6. Step 6: Final answer
    x = 2,098.46

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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.