Home / 1,415.33-2,122.21-1,124.69

Finding the Fourth Proportional to 1,415.33, 2,122.21 and 1,124.69

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Solution

The fourth proportional to 1,415.33, 2,122.21 and 1,124.69 is: 1,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.33 : 2,122.21 = 1,124.69 : x
  2. Step 2: Convert to fraction form
    1,415.33/2,122.21 = 1,124.69/x
  3. Step 3: Cross multiply
    1,415.33x = 2,122.21 × 1,124.69
  4. Step 4: Simplify right side
    1,415.33x = 2,386,822.74
  5. Step 5: Solve for x
    x = 2,386,822.74/1,415.33
  6. Step 6: Final answer
    x = 1,686.41

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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.