Home / 3,428.72-4,731.59-1,856.81

Finding the Fourth Proportional to 3,428.72, 4,731.59 and 1,856.81

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Solution

The fourth proportional to 3,428.72, 4,731.59 and 1,856.81 is: 2,562.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.72 : 4,731.59 = 1,856.81 : x
  2. Step 2: Convert to fraction form
    3,428.72/4,731.59 = 1,856.81/x
  3. Step 3: Cross multiply
    3,428.72x = 4,731.59 × 1,856.81
  4. Step 4: Simplify right side
    3,428.72x = 8,785,666.17
  5. Step 5: Solve for x
    x = 8,785,666.17/3,428.72
  6. Step 6: Final answer
    x = 2,562.37

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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.