Home / 4,188.28-5,779.56-2,419.78

Finding the Fourth Proportional to 4,188.28, 5,779.56 and 2,419.78

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Solution

The fourth proportional to 4,188.28, 5,779.56 and 2,419.78 is: 3,339.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.28 : 5,779.56 = 2,419.78 : x
  2. Step 2: Convert to fraction form
    4,188.28/5,779.56 = 2,419.78/x
  3. Step 3: Cross multiply
    4,188.28x = 5,779.56 × 2,419.78
  4. Step 4: Simplify right side
    4,188.28x = 13,985,263.70
  5. Step 5: Solve for x
    x = 13,985,263.70/4,188.28
  6. Step 6: Final answer
    x = 3,339.14

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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.