Home / 5,420.79-8,132.33-1,910.66

Finding the Fourth Proportional to 5,420.79, 8,132.33 and 1,910.66

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Solution

The fourth proportional to 5,420.79, 8,132.33 and 1,910.66 is: 2,866.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.79 : 8,132.33 = 1,910.66 : x
  2. Step 2: Convert to fraction form
    5,420.79/8,132.33 = 1,910.66/x
  3. Step 3: Cross multiply
    5,420.79x = 8,132.33 × 1,910.66
  4. Step 4: Simplify right side
    5,420.79x = 15,538,081.75
  5. Step 5: Solve for x
    x = 15,538,081.75/5,420.79
  6. Step 6: Final answer
    x = 2,866.39

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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.