Home / 4,189.36-5,779.66-2,420.64

Finding the Fourth Proportional to 4,189.36, 5,779.66 and 2,420.64

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Solution

The fourth proportional to 4,189.36, 5,779.66 and 2,420.64 is: 3,339.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.36 : 5,779.66 = 2,420.64 : x
  2. Step 2: Convert to fraction form
    4,189.36/5,779.66 = 2,420.64/x
  3. Step 3: Cross multiply
    4,189.36x = 5,779.66 × 2,420.64
  4. Step 4: Simplify right side
    4,189.36x = 13,990,476.18
  5. Step 5: Solve for x
    x = 13,990,476.18/4,189.36
  6. Step 6: Final answer
    x = 3,339.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.