Home / 1,415.22-2,124.18-868.47

Finding the Fourth Proportional to 1,415.22, 2,124.18 and 868.47

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Solution

The fourth proportional to 1,415.22, 2,124.18 and 868.47 is: 1,303.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.22 : 2,124.18 = 868.47 : x
  2. Step 2: Convert to fraction form
    1,415.22/2,124.18 = 868.47/x
  3. Step 3: Cross multiply
    1,415.22x = 2,124.18 × 868.47
  4. Step 4: Simplify right side
    1,415.22x = 1,844,786.60
  5. Step 5: Solve for x
    x = 1,844,786.60/1,415.22
  6. Step 6: Final answer
    x = 1,303.53

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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.