Home / 3,160.40-4,741.38-1,428.56

Finding the Fourth Proportional to 3,160.40, 4,741.38 and 1,428.56

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Solution

The fourth proportional to 3,160.40, 4,741.38 and 1,428.56 is: 2,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.40 : 4,741.38 = 1,428.56 : x
  2. Step 2: Convert to fraction form
    3,160.40/4,741.38 = 1,428.56/x
  3. Step 3: Cross multiply
    3,160.40x = 4,741.38 × 1,428.56
  4. Step 4: Simplify right side
    3,160.40x = 6,773,345.81
  5. Step 5: Solve for x
    x = 6,773,345.81/3,160.40
  6. Step 6: Final answer
    x = 2,143.19

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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.