Home / 1,428.50-2,127.14-1,375.95

Finding the Fourth Proportional to 1,428.50, 2,127.14 and 1,375.95

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Solution

The fourth proportional to 1,428.50, 2,127.14 and 1,375.95 is: 2,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.50 : 2,127.14 = 1,375.95 : x
  2. Step 2: Convert to fraction form
    1,428.50/2,127.14 = 1,375.95/x
  3. Step 3: Cross multiply
    1,428.50x = 2,127.14 × 1,375.95
  4. Step 4: Simplify right side
    1,428.50x = 2,926,847.12
  5. Step 5: Solve for x
    x = 2,926,847.12/1,428.50
  6. Step 6: Final answer
    x = 2,048.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.