Home / 3,106.35-4,660.40-915.03

Finding the Fourth Proportional to 3,106.35, 4,660.40 and 915.03

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Solution

The fourth proportional to 3,106.35, 4,660.40 and 915.03 is: 1,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.35 : 4,660.40 = 915.03 : x
  2. Step 2: Convert to fraction form
    3,106.35/4,660.40 = 915.03/x
  3. Step 3: Cross multiply
    3,106.35x = 4,660.40 × 915.03
  4. Step 4: Simplify right side
    3,106.35x = 4,264,401.24
  5. Step 5: Solve for x
    x = 4,264,401.24/3,106.35
  6. Step 6: Final answer
    x = 1,372.80

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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.