Home / 1,225.92-1,840.20-1,146.60

Finding the Fourth Proportional to 1,225.92, 1,840.20 and 1,146.60

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Solution

The fourth proportional to 1,225.92, 1,840.20 and 1,146.60 is: 1,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.92 : 1,840.20 = 1,146.60 : x
  2. Step 2: Convert to fraction form
    1,225.92/1,840.20 = 1,146.60/x
  3. Step 3: Cross multiply
    1,225.92x = 1,840.20 × 1,146.60
  4. Step 4: Simplify right side
    1,225.92x = 2,109,973.32
  5. Step 5: Solve for x
    x = 2,109,973.32/1,225.92
  6. Step 6: Final answer
    x = 1,721.13

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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.