Home / 5,420.35-8,130.48-2,788.59

Finding the Fourth Proportional to 5,420.35, 8,130.48 and 2,788.59

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Solution

The fourth proportional to 5,420.35, 8,130.48 and 2,788.59 is: 4,182.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.35 : 8,130.48 = 2,788.59 : x
  2. Step 2: Convert to fraction form
    5,420.35/8,130.48 = 2,788.59/x
  3. Step 3: Cross multiply
    5,420.35x = 8,130.48 × 2,788.59
  4. Step 4: Simplify right side
    5,420.35x = 22,672,618.78
  5. Step 5: Solve for x
    x = 22,672,618.78/5,420.35
  6. Step 6: Final answer
    x = 4,182.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.