Home / 3,428.81-4,731.75-1,856.90

Finding the Fourth Proportional to 3,428.81, 4,731.75 and 1,856.90

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Solution

The fourth proportional to 3,428.81, 4,731.75 and 1,856.90 is: 2,562.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.81 : 4,731.75 = 1,856.90 : x
  2. Step 2: Convert to fraction form
    3,428.81/4,731.75 = 1,856.90/x
  3. Step 3: Cross multiply
    3,428.81x = 4,731.75 × 1,856.90
  4. Step 4: Simplify right side
    3,428.81x = 8,786,386.58
  5. Step 5: Solve for x
    x = 8,786,386.58/3,428.81
  6. Step 6: Final answer
    x = 2,562.52

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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.