Home / 5,189.48-7,781.34-1,724.84

Finding the Fourth Proportional to 5,189.48, 7,781.34 and 1,724.84

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Solution

The fourth proportional to 5,189.48, 7,781.34 and 1,724.84 is: 2,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.48 : 7,781.34 = 1,724.84 : x
  2. Step 2: Convert to fraction form
    5,189.48/7,781.34 = 1,724.84/x
  3. Step 3: Cross multiply
    5,189.48x = 7,781.34 × 1,724.84
  4. Step 4: Simplify right side
    5,189.48x = 13,421,566.49
  5. Step 5: Solve for x
    x = 13,421,566.49/5,189.48
  6. Step 6: Final answer
    x = 2,586.30

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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.