Home / 2,639.69-3,642.93-1,520.60

Finding the Fourth Proportional to 2,639.69, 3,642.93 and 1,520.60

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Solution

The fourth proportional to 2,639.69, 3,642.93 and 1,520.60 is: 2,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.69 : 3,642.93 = 1,520.60 : x
  2. Step 2: Convert to fraction form
    2,639.69/3,642.93 = 1,520.60/x
  3. Step 3: Cross multiply
    2,639.69x = 3,642.93 × 1,520.60
  4. Step 4: Simplify right side
    2,639.69x = 5,539,439.36
  5. Step 5: Solve for x
    x = 5,539,439.36/2,639.69
  6. Step 6: Final answer
    x = 2,098.52

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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.