Home / 2,912.31-4,018.86-1,653.20

Finding the Fourth Proportional to 2,912.31, 4,018.86 and 1,653.20

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Solution

The fourth proportional to 2,912.31, 4,018.86 and 1,653.20 is: 2,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.31 : 4,018.86 = 1,653.20 : x
  2. Step 2: Convert to fraction form
    2,912.31/4,018.86 = 1,653.20/x
  3. Step 3: Cross multiply
    2,912.31x = 4,018.86 × 1,653.20
  4. Step 4: Simplify right side
    2,912.31x = 6,643,983.20
  5. Step 5: Solve for x
    x = 6,643,983.20/2,912.31
  6. Step 6: Final answer
    x = 2,281.34

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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.