Home / 1,629.45-2,248.54-921.37

Finding the Fourth Proportional to 1,629.45, 2,248.54 and 921.37

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Solution

The fourth proportional to 1,629.45, 2,248.54 and 921.37 is: 1,271.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.45 : 2,248.54 = 921.37 : x
  2. Step 2: Convert to fraction form
    1,629.45/2,248.54 = 921.37/x
  3. Step 3: Cross multiply
    1,629.45x = 2,248.54 × 921.37
  4. Step 4: Simplify right side
    1,629.45x = 2,071,737.30
  5. Step 5: Solve for x
    x = 2,071,737.30/1,629.45
  6. Step 6: Final answer
    x = 1,271.43

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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.