Home / 3,512.12-5,268.30-915.32

Finding the Fourth Proportional to 3,512.12, 5,268.30 and 915.32

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Solution

The fourth proportional to 3,512.12, 5,268.30 and 915.32 is: 1,373.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.12 : 5,268.30 = 915.32 : x
  2. Step 2: Convert to fraction form
    3,512.12/5,268.30 = 915.32/x
  3. Step 3: Cross multiply
    3,512.12x = 5,268.30 × 915.32
  4. Step 4: Simplify right side
    3,512.12x = 4,822,180.36
  5. Step 5: Solve for x
    x = 4,822,180.36/3,512.12
  6. Step 6: Final answer
    x = 1,373.01

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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.