Home / 3,079.84-4,619.68-1,131.20

Finding the Fourth Proportional to 3,079.84, 4,619.68 and 1,131.20

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Solution

The fourth proportional to 3,079.84, 4,619.68 and 1,131.20 is: 1,696.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.84 : 4,619.68 = 1,131.20 : x
  2. Step 2: Convert to fraction form
    3,079.84/4,619.68 = 1,131.20/x
  3. Step 3: Cross multiply
    3,079.84x = 4,619.68 × 1,131.20
  4. Step 4: Simplify right side
    3,079.84x = 5,225,782.02
  5. Step 5: Solve for x
    x = 5,225,782.02/3,079.84
  6. Step 6: Final answer
    x = 1,696.77

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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.