Home / 2,720.90-4,090.05-2,528.30

Finding the Fourth Proportional to 2,720.90, 4,090.05 and 2,528.30

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Solution

The fourth proportional to 2,720.90, 4,090.05 and 2,528.30 is: 3,800.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.90 : 4,090.05 = 2,528.30 : x
  2. Step 2: Convert to fraction form
    2,720.90/4,090.05 = 2,528.30/x
  3. Step 3: Cross multiply
    2,720.90x = 4,090.05 × 2,528.30
  4. Step 4: Simplify right side
    2,720.90x = 10,340,873.42
  5. Step 5: Solve for x
    x = 10,340,873.42/2,720.90
  6. Step 6: Final answer
    x = 3,800.53

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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.