Home / 3,130.20-4,694.55-1,811.10

Finding the Fourth Proportional to 3,130.20, 4,694.55 and 1,811.10

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Solution

The fourth proportional to 3,130.20, 4,694.55 and 1,811.10 is: 2,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.20 : 4,694.55 = 1,811.10 : x
  2. Step 2: Convert to fraction form
    3,130.20/4,694.55 = 1,811.10/x
  3. Step 3: Cross multiply
    3,130.20x = 4,694.55 × 1,811.10
  4. Step 4: Simplify right side
    3,130.20x = 8,502,299.51
  5. Step 5: Solve for x
    x = 8,502,299.51/3,130.20
  6. Step 6: Final answer
    x = 2,716.22

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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.