Home / 3,428.70-4,731.57-1,856.78

Finding the Fourth Proportional to 3,428.70, 4,731.57 and 1,856.78

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Solution

The fourth proportional to 3,428.70, 4,731.57 and 1,856.78 is: 2,562.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.70 : 4,731.57 = 1,856.78 : x
  2. Step 2: Convert to fraction form
    3,428.70/4,731.57 = 1,856.78/x
  3. Step 3: Cross multiply
    3,428.70x = 4,731.57 × 1,856.78
  4. Step 4: Simplify right side
    3,428.70x = 8,785,460.89
  5. Step 5: Solve for x
    x = 8,785,460.89/3,428.70
  6. Step 6: Final answer
    x = 2,562.33

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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.