Home / 5,388.82-8,079.34-1,689.06

Finding the Fourth Proportional to 5,388.82, 8,079.34 and 1,689.06

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Solution

The fourth proportional to 5,388.82, 8,079.34 and 1,689.06 is: 2,532.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.82 : 8,079.34 = 1,689.06 : x
  2. Step 2: Convert to fraction form
    5,388.82/8,079.34 = 1,689.06/x
  3. Step 3: Cross multiply
    5,388.82x = 8,079.34 × 1,689.06
  4. Step 4: Simplify right side
    5,388.82x = 13,646,490.02
  5. Step 5: Solve for x
    x = 13,646,490.02/5,388.82
  6. Step 6: Final answer
    x = 2,532.37

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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.