Home / 3,107.07-4,659.21-915.03

Finding the Fourth Proportional to 3,107.07, 4,659.21 and 915.03

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Solution

The fourth proportional to 3,107.07, 4,659.21 and 915.03 is: 1,372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.07 : 4,659.21 = 915.03 : x
  2. Step 2: Convert to fraction form
    3,107.07/4,659.21 = 915.03/x
  3. Step 3: Cross multiply
    3,107.07x = 4,659.21 × 915.03
  4. Step 4: Simplify right side
    3,107.07x = 4,263,316.93
  5. Step 5: Solve for x
    x = 4,263,316.93/3,107.07
  6. Step 6: Final answer
    x = 1,372.13

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1.5x scale

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.