Home / 2,931.31-4,393.87-1,081.24

Finding the Fourth Proportional to 2,931.31, 4,393.87 and 1,081.24

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Solution

The fourth proportional to 2,931.31, 4,393.87 and 1,081.24 is: 1,620.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.31 : 4,393.87 = 1,081.24 : x
  2. Step 2: Convert to fraction form
    2,931.31/4,393.87 = 1,081.24/x
  3. Step 3: Cross multiply
    2,931.31x = 4,393.87 × 1,081.24
  4. Step 4: Simplify right side
    2,931.31x = 4,750,828.00
  5. Step 5: Solve for x
    x = 4,750,828.00/2,931.31
  6. Step 6: Final answer
    x = 1,620.72

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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.