Home / 5,158.09-7,118.12-2,800.22

Finding the Fourth Proportional to 5,158.09, 7,118.12 and 2,800.22

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Solution

The fourth proportional to 5,158.09, 7,118.12 and 2,800.22 is: 3,864.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.09 : 7,118.12 = 2,800.22 : x
  2. Step 2: Convert to fraction form
    5,158.09/7,118.12 = 2,800.22/x
  3. Step 3: Cross multiply
    5,158.09x = 7,118.12 × 2,800.22
  4. Step 4: Simplify right side
    5,158.09x = 19,932,287.99
  5. Step 5: Solve for x
    x = 19,932,287.99/5,158.09
  6. Step 6: Final answer
    x = 3,864.28

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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.