Home / 6,787.20-10,181.40-1,856.86

Finding the Fourth Proportional to 6,787.20, 10,181.40 and 1,856.86

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Solution

The fourth proportional to 6,787.20, 10,181.40 and 1,856.86 is: 2,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,787.20 : 10,181.40 = 1,856.86 : x
  2. Step 2: Convert to fraction form
    6,787.20/10,181.40 = 1,856.86/x
  3. Step 3: Cross multiply
    6,787.20x = 10,181.40 × 1,856.86
  4. Step 4: Simplify right side
    6,787.20x = 18,905,434.40
  5. Step 5: Solve for x
    x = 18,905,434.40/6,787.20
  6. Step 6: Final answer
    x = 2,785.45

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1.5x scale

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.