Home / 6,427.90-9,642.30-2,729.72

Finding the Fourth Proportional to 6,427.90, 9,642.30 and 2,729.72

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Solution

The fourth proportional to 6,427.90, 9,642.30 and 2,729.72 is: 4,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,427.90 : 9,642.30 = 2,729.72 : x
  2. Step 2: Convert to fraction form
    6,427.90/9,642.30 = 2,729.72/x
  3. Step 3: Cross multiply
    6,427.90x = 9,642.30 × 2,729.72
  4. Step 4: Simplify right side
    6,427.90x = 26,320,779.16
  5. Step 5: Solve for x
    x = 26,320,779.16/6,427.90
  6. Step 6: Final answer
    x = 4,094.77

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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.