Home / 4,889.95-7,334.12-1,380.20

Finding the Fourth Proportional to 4,889.95, 7,334.12 and 1,380.20

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Solution

The fourth proportional to 4,889.95, 7,334.12 and 1,380.20 is: 2,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.95 : 7,334.12 = 1,380.20 : x
  2. Step 2: Convert to fraction form
    4,889.95/7,334.12 = 1,380.20/x
  3. Step 3: Cross multiply
    4,889.95x = 7,334.12 × 1,380.20
  4. Step 4: Simplify right side
    4,889.95x = 10,122,519.20
  5. Step 5: Solve for x
    x = 10,122,519.20/4,889.95
  6. Step 6: Final answer
    x = 2,070.07

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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.