Home / 4,900.20-7,349.22-3,139.92

Finding the Fourth Proportional to 4,900.20, 7,349.22 and 3,139.92

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Solution

The fourth proportional to 4,900.20, 7,349.22 and 3,139.92 is: 4,709.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.20 : 7,349.22 = 3,139.92 : x
  2. Step 2: Convert to fraction form
    4,900.20/7,349.22 = 3,139.92/x
  3. Step 3: Cross multiply
    4,900.20x = 7,349.22 × 3,139.92
  4. Step 4: Simplify right side
    4,900.20x = 23,075,962.86
  5. Step 5: Solve for x
    x = 23,075,962.86/4,900.20
  6. Step 6: Final answer
    x = 4,709.19

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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.