Home / 3,126.24-4,312.08-2,080.08

Finding the Fourth Proportional to 3,126.24, 4,312.08 and 2,080.08

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Solution

The fourth proportional to 3,126.24, 4,312.08 and 2,080.08 is: 2,869.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.24 : 4,312.08 = 2,080.08 : x
  2. Step 2: Convert to fraction form
    3,126.24/4,312.08 = 2,080.08/x
  3. Step 3: Cross multiply
    3,126.24x = 4,312.08 × 2,080.08
  4. Step 4: Simplify right side
    3,126.24x = 8,969,471.37
  5. Step 5: Solve for x
    x = 8,969,471.37/3,126.24
  6. Step 6: Final answer
    x = 2,869.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.