Home / 5,420.05-8,129.95-2,498.36

Finding the Fourth Proportional to 5,420.05, 8,129.95 and 2,498.36

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Solution

The fourth proportional to 5,420.05, 8,129.95 and 2,498.36 is: 3,747.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.05 : 8,129.95 = 2,498.36 : x
  2. Step 2: Convert to fraction form
    5,420.05/8,129.95 = 2,498.36/x
  3. Step 3: Cross multiply
    5,420.05x = 8,129.95 × 2,498.36
  4. Step 4: Simplify right side
    5,420.05x = 20,311,541.88
  5. Step 5: Solve for x
    x = 20,311,541.88/5,420.05
  6. Step 6: Final answer
    x = 3,747.48

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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.