Home / 5,188.20-7,782.18-1,490.34

Finding the Fourth Proportional to 5,188.20, 7,782.18 and 1,490.34

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Solution

The fourth proportional to 5,188.20, 7,782.18 and 1,490.34 is: 2,235.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.20 : 7,782.18 = 1,490.34 : x
  2. Step 2: Convert to fraction form
    5,188.20/7,782.18 = 1,490.34/x
  3. Step 3: Cross multiply
    5,188.20x = 7,782.18 × 1,490.34
  4. Step 4: Simplify right side
    5,188.20x = 11,598,094.14
  5. Step 5: Solve for x
    x = 11,598,094.14/5,188.20
  6. Step 6: Final answer
    x = 2,235.48

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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.