Home / 5,387.91-8,082.48-1,690.05

Finding the Fourth Proportional to 5,387.91, 8,082.48 and 1,690.05

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Solution

The fourth proportional to 5,387.91, 8,082.48 and 1,690.05 is: 2,535.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.91 : 8,082.48 = 1,690.05 : x
  2. Step 2: Convert to fraction form
    5,387.91/8,082.48 = 1,690.05/x
  3. Step 3: Cross multiply
    5,387.91x = 8,082.48 × 1,690.05
  4. Step 4: Simplify right side
    5,387.91x = 13,659,795.32
  5. Step 5: Solve for x
    x = 13,659,795.32/5,387.91
  6. Step 6: Final answer
    x = 2,535.27

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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.