Home / 2,973.12-4,459.68-1,819.20

Finding the Fourth Proportional to 2,973.12, 4,459.68 and 1,819.20

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Solution

The fourth proportional to 2,973.12, 4,459.68 and 1,819.20 is: 2,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,973.12 : 4,459.68 = 1,819.20 : x
  2. Step 2: Convert to fraction form
    2,973.12/4,459.68 = 1,819.20/x
  3. Step 3: Cross multiply
    2,973.12x = 4,459.68 × 1,819.20
  4. Step 4: Simplify right side
    2,973.12x = 8,113,049.86
  5. Step 5: Solve for x
    x = 8,113,049.86/2,973.12
  6. Step 6: Final answer
    x = 2,728.80

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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.