Home / 1,856.29-2,783.11-931.18

Finding the Fourth Proportional to 1,856.29, 2,783.11 and 931.18

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Solution

The fourth proportional to 1,856.29, 2,783.11 and 931.18 is: 1,396.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.29 : 2,783.11 = 931.18 : x
  2. Step 2: Convert to fraction form
    1,856.29/2,783.11 = 931.18/x
  3. Step 3: Cross multiply
    1,856.29x = 2,783.11 × 931.18
  4. Step 4: Simplify right side
    1,856.29x = 2,591,557.80
  5. Step 5: Solve for x
    x = 2,591,557.80/1,856.29
  6. Step 6: Final answer
    x = 1,396.10

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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.