Home / 1,921.92-2,653.12-1,710.51

Finding the Fourth Proportional to 1,921.92, 2,653.12 and 1,710.51

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Solution

The fourth proportional to 1,921.92, 2,653.12 and 1,710.51 is: 2,361.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.92 : 2,653.12 = 1,710.51 : x
  2. Step 2: Convert to fraction form
    1,921.92/2,653.12 = 1,710.51/x
  3. Step 3: Cross multiply
    1,921.92x = 2,653.12 × 1,710.51
  4. Step 4: Simplify right side
    1,921.92x = 4,538,188.29
  5. Step 5: Solve for x
    x = 4,538,188.29/1,921.92
  6. Step 6: Final answer
    x = 2,361.28

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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.