Home / 1,946.21-2,687.54-1,248.80

Finding the Fourth Proportional to 1,946.21, 2,687.54 and 1,248.80

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Solution

The fourth proportional to 1,946.21, 2,687.54 and 1,248.80 is: 1,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.21 : 2,687.54 = 1,248.80 : x
  2. Step 2: Convert to fraction form
    1,946.21/2,687.54 = 1,248.80/x
  3. Step 3: Cross multiply
    1,946.21x = 2,687.54 × 1,248.80
  4. Step 4: Simplify right side
    1,946.21x = 3,356,180.27
  5. Step 5: Solve for x
    x = 3,356,180.27/1,946.21
  6. Step 6: Final answer
    x = 1,724.47

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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.