Home / 2,856.89-3,939.95-1,794.76

Finding the Fourth Proportional to 2,856.89, 3,939.95 and 1,794.76

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Solution

The fourth proportional to 2,856.89, 3,939.95 and 1,794.76 is: 2,475.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.89 : 3,939.95 = 1,794.76 : x
  2. Step 2: Convert to fraction form
    2,856.89/3,939.95 = 1,794.76/x
  3. Step 3: Cross multiply
    2,856.89x = 3,939.95 × 1,794.76
  4. Step 4: Simplify right side
    2,856.89x = 7,071,245.84
  5. Step 5: Solve for x
    x = 7,071,245.84/2,856.89
  6. Step 6: Final answer
    x = 2,475.15

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1.5x scale

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.