Home / 3,638.55-5,459.01-2,987.58

Finding the Fourth Proportional to 3,638.55, 5,459.01 and 2,987.58

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Solution

The fourth proportional to 3,638.55, 5,459.01 and 2,987.58 is: 4,482.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.55 : 5,459.01 = 2,987.58 : x
  2. Step 2: Convert to fraction form
    3,638.55/5,459.01 = 2,987.58/x
  3. Step 3: Cross multiply
    3,638.55x = 5,459.01 × 2,987.58
  4. Step 4: Simplify right side
    3,638.55x = 16,309,229.10
  5. Step 5: Solve for x
    x = 16,309,229.10/3,638.55
  6. Step 6: Final answer
    x = 4,482.34

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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.