Home / 3,106.62-4,660.70-915.35

Finding the Fourth Proportional to 3,106.62, 4,660.70 and 915.35

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Solution

The fourth proportional to 3,106.62, 4,660.70 and 915.35 is: 1,373.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.62 : 4,660.70 = 915.35 : x
  2. Step 2: Convert to fraction form
    3,106.62/4,660.70 = 915.35/x
  3. Step 3: Cross multiply
    3,106.62x = 4,660.70 × 915.35
  4. Step 4: Simplify right side
    3,106.62x = 4,266,143.86
  5. Step 5: Solve for x
    x = 4,266,143.86/3,106.62
  6. Step 6: Final answer
    x = 1,373.24

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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.