Home / 1,563.31-2,345.28-742.50

Finding the Fourth Proportional to 1,563.31, 2,345.28 and 742.50

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Solution

The fourth proportional to 1,563.31, 2,345.28 and 742.50 is: 1,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.31 : 2,345.28 = 742.50 : x
  2. Step 2: Convert to fraction form
    1,563.31/2,345.28 = 742.50/x
  3. Step 3: Cross multiply
    1,563.31x = 2,345.28 × 742.50
  4. Step 4: Simplify right side
    1,563.31x = 1,741,370.40
  5. Step 5: Solve for x
    x = 1,741,370.40/1,563.31
  6. Step 6: Final answer
    x = 1,113.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.