Home / 1,720.31-2,374.58-1,099.31

Finding the Fourth Proportional to 1,720.31, 2,374.58 and 1,099.31

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Solution

The fourth proportional to 1,720.31, 2,374.58 and 1,099.31 is: 1,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.31 : 2,374.58 = 1,099.31 : x
  2. Step 2: Convert to fraction form
    1,720.31/2,374.58 = 1,099.31/x
  3. Step 3: Cross multiply
    1,720.31x = 2,374.58 × 1,099.31
  4. Step 4: Simplify right side
    1,720.31x = 2,610,399.98
  5. Step 5: Solve for x
    x = 2,610,399.98/1,720.31
  6. Step 6: Final answer
    x = 1,517.40

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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.