Home / 6,478.13-9,720.50-2,779.35

Finding the Fourth Proportional to 6,478.13, 9,720.50 and 2,779.35

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Solution

The fourth proportional to 6,478.13, 9,720.50 and 2,779.35 is: 4,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.13 : 9,720.50 = 2,779.35 : x
  2. Step 2: Convert to fraction form
    6,478.13/9,720.50 = 2,779.35/x
  3. Step 3: Cross multiply
    6,478.13x = 9,720.50 × 2,779.35
  4. Step 4: Simplify right side
    6,478.13x = 27,016,657.78
  5. Step 5: Solve for x
    x = 27,016,657.78/6,478.13
  6. Step 6: Final answer
    x = 4,170.44

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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.