Home / 1,415.21-2,123.91-1,342.94

Finding the Fourth Proportional to 1,415.21, 2,123.91 and 1,342.94

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Solution

The fourth proportional to 1,415.21, 2,123.91 and 1,342.94 is: 2,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.21 : 2,123.91 = 1,342.94 : x
  2. Step 2: Convert to fraction form
    1,415.21/2,123.91 = 1,342.94/x
  3. Step 3: Cross multiply
    1,415.21x = 2,123.91 × 1,342.94
  4. Step 4: Simplify right side
    1,415.21x = 2,852,273.08
  5. Step 5: Solve for x
    x = 2,852,273.08/1,415.21
  6. Step 6: Final answer
    x = 2,015.45

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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.