Home / 2,428.53-3,646.44-1,389.71

Finding the Fourth Proportional to 2,428.53, 3,646.44 and 1,389.71

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Solution

The fourth proportional to 2,428.53, 3,646.44 and 1,389.71 is: 2,086.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.53 : 3,646.44 = 1,389.71 : x
  2. Step 2: Convert to fraction form
    2,428.53/3,646.44 = 1,389.71/x
  3. Step 3: Cross multiply
    2,428.53x = 3,646.44 × 1,389.71
  4. Step 4: Simplify right side
    2,428.53x = 5,067,475.90
  5. Step 5: Solve for x
    x = 5,067,475.90/2,428.53
  6. Step 6: Final answer
    x = 2,086.64

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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.