Home / 2,639.64-3,957.03-1,253.63

Finding the Fourth Proportional to 2,639.64, 3,957.03 and 1,253.63

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Solution

The fourth proportional to 2,639.64, 3,957.03 and 1,253.63 is: 1,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.64 : 3,957.03 = 1,253.63 : x
  2. Step 2: Convert to fraction form
    2,639.64/3,957.03 = 1,253.63/x
  3. Step 3: Cross multiply
    2,639.64x = 3,957.03 × 1,253.63
  4. Step 4: Simplify right side
    2,639.64x = 4,960,625.47
  5. Step 5: Solve for x
    x = 4,960,625.47/2,639.64
  6. Step 6: Final answer
    x = 1,879.28

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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.