Home / 1,228.60-1,853.08-1,147.60

Finding the Fourth Proportional to 1,228.60, 1,853.08 and 1,147.60

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Solution

The fourth proportional to 1,228.60, 1,853.08 and 1,147.60 is: 1,730.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.60 : 1,853.08 = 1,147.60 : x
  2. Step 2: Convert to fraction form
    1,228.60/1,853.08 = 1,147.60/x
  3. Step 3: Cross multiply
    1,228.60x = 1,853.08 × 1,147.60
  4. Step 4: Simplify right side
    1,228.60x = 2,126,594.61
  5. Step 5: Solve for x
    x = 2,126,594.61/1,228.60
  6. Step 6: Final answer
    x = 1,730.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.