Home / 3,554.06-4,915.20-3,111.20

Finding the Fourth Proportional to 3,554.06, 4,915.20 and 3,111.20

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Solution

The fourth proportional to 3,554.06, 4,915.20 and 3,111.20 is: 4,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.06 : 4,915.20 = 3,111.20 : x
  2. Step 2: Convert to fraction form
    3,554.06/4,915.20 = 3,111.20/x
  3. Step 3: Cross multiply
    3,554.06x = 4,915.20 × 3,111.20
  4. Step 4: Simplify right side
    3,554.06x = 15,292,170.24
  5. Step 5: Solve for x
    x = 15,292,170.24/3,554.06
  6. Step 6: Final answer
    x = 4,302.73

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.