Home / 3,258.18-4,886.88-918.36

Finding the Fourth Proportional to 3,258.18, 4,886.88 and 918.36

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Solution

The fourth proportional to 3,258.18, 4,886.88 and 918.36 is: 1,377.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.18 : 4,886.88 = 918.36 : x
  2. Step 2: Convert to fraction form
    3,258.18/4,886.88 = 918.36/x
  3. Step 3: Cross multiply
    3,258.18x = 4,886.88 × 918.36
  4. Step 4: Simplify right side
    3,258.18x = 4,487,915.12
  5. Step 5: Solve for x
    x = 4,487,915.12/3,258.18
  6. Step 6: Final answer
    x = 1,377.43

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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.