Home / 1,425.84-2,139.96-1,415.04

Finding the Fourth Proportional to 1,425.84, 2,139.96 and 1,415.04

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Solution

The fourth proportional to 1,425.84, 2,139.96 and 1,415.04 is: 2,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.84 : 2,139.96 = 1,415.04 : x
  2. Step 2: Convert to fraction form
    1,425.84/2,139.96 = 1,415.04/x
  3. Step 3: Cross multiply
    1,425.84x = 2,139.96 × 1,415.04
  4. Step 4: Simplify right side
    1,425.84x = 3,028,129.00
  5. Step 5: Solve for x
    x = 3,028,129.00/1,425.84
  6. Step 6: Final answer
    x = 2,123.75

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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.