Home / 5,420.10-8,131.80-2,298.48

Finding the Fourth Proportional to 5,420.10, 8,131.80 and 2,298.48

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Solution

The fourth proportional to 5,420.10, 8,131.80 and 2,298.48 is: 3,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.10 : 8,131.80 = 2,298.48 : x
  2. Step 2: Convert to fraction form
    5,420.10/8,131.80 = 2,298.48/x
  3. Step 3: Cross multiply
    5,420.10x = 8,131.80 × 2,298.48
  4. Step 4: Simplify right side
    5,420.10x = 18,690,779.66
  5. Step 5: Solve for x
    x = 18,690,779.66/5,420.10
  6. Step 6: Final answer
    x = 3,448.42

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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.