Home / 2,720.04-4,080.18-1,421.88

Finding the Fourth Proportional to 2,720.04, 4,080.18 and 1,421.88

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Solution

The fourth proportional to 2,720.04, 4,080.18 and 1,421.88 is: 2,132.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.04 : 4,080.18 = 1,421.88 : x
  2. Step 2: Convert to fraction form
    2,720.04/4,080.18 = 1,421.88/x
  3. Step 3: Cross multiply
    2,720.04x = 4,080.18 × 1,421.88
  4. Step 4: Simplify right side
    2,720.04x = 5,801,526.34
  5. Step 5: Solve for x
    x = 5,801,526.34/2,720.04
  6. Step 6: Final answer
    x = 2,132.88

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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.