Home / 1,428.42-2,151.66-1,299.25

Finding the Fourth Proportional to 1,428.42, 2,151.66 and 1,299.25

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Solution

The fourth proportional to 1,428.42, 2,151.66 and 1,299.25 is: 1,957.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.42 : 2,151.66 = 1,299.25 : x
  2. Step 2: Convert to fraction form
    1,428.42/2,151.66 = 1,299.25/x
  3. Step 3: Cross multiply
    1,428.42x = 2,151.66 × 1,299.25
  4. Step 4: Simplify right side
    1,428.42x = 2,795,539.71
  5. Step 5: Solve for x
    x = 2,795,539.71/1,428.42
  6. Step 6: Final answer
    x = 1,957.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.