Home / 1,647.28-2,270.48-1,248.82

Finding the Fourth Proportional to 1,647.28, 2,270.48 and 1,248.82

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Solution

The fourth proportional to 1,647.28, 2,270.48 and 1,248.82 is: 1,721.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.28 : 2,270.48 = 1,248.82 : x
  2. Step 2: Convert to fraction form
    1,647.28/2,270.48 = 1,248.82/x
  3. Step 3: Cross multiply
    1,647.28x = 2,270.48 × 1,248.82
  4. Step 4: Simplify right side
    1,647.28x = 2,835,415.94
  5. Step 5: Solve for x
    x = 2,835,415.94/1,647.28
  6. Step 6: Final answer
    x = 1,721.27

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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.