Home / 2,639.02-3,958.53-1,251.60

Finding the Fourth Proportional to 2,639.02, 3,958.53 and 1,251.60

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Solution

The fourth proportional to 2,639.02, 3,958.53 and 1,251.60 is: 1,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.02 : 3,958.53 = 1,251.60 : x
  2. Step 2: Convert to fraction form
    2,639.02/3,958.53 = 1,251.60/x
  3. Step 3: Cross multiply
    2,639.02x = 3,958.53 × 1,251.60
  4. Step 4: Simplify right side
    2,639.02x = 4,954,503.57
  5. Step 5: Solve for x
    x = 4,954,503.57/2,639.02
  6. Step 6: Final answer
    x = 1,877.40

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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.