Home / 2,639.59-3,642.09-1,520.23

Finding the Fourth Proportional to 2,639.59, 3,642.09 and 1,520.23

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Solution

The fourth proportional to 2,639.59, 3,642.09 and 1,520.23 is: 2,097.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.59 : 3,642.09 = 1,520.23 : x
  2. Step 2: Convert to fraction form
    2,639.59/3,642.09 = 1,520.23/x
  3. Step 3: Cross multiply
    2,639.59x = 3,642.09 × 1,520.23
  4. Step 4: Simplify right side
    2,639.59x = 5,536,800.54
  5. Step 5: Solve for x
    x = 5,536,800.54/2,639.59
  6. Step 6: Final answer
    x = 2,097.60

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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.