Home / 3,554.60-5,331.90-2,820.20

Finding the Fourth Proportional to 3,554.60, 5,331.90 and 2,820.20

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Solution

The fourth proportional to 3,554.60, 5,331.90 and 2,820.20 is: 4,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.60 : 5,331.90 = 2,820.20 : x
  2. Step 2: Convert to fraction form
    3,554.60/5,331.90 = 2,820.20/x
  3. Step 3: Cross multiply
    3,554.60x = 5,331.90 × 2,820.20
  4. Step 4: Simplify right side
    3,554.60x = 15,037,024.38
  5. Step 5: Solve for x
    x = 15,037,024.38/3,554.60
  6. Step 6: Final answer
    x = 4,230.30

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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.