Home / 6,378.90-9,579.87-4,192.02

Finding the Fourth Proportional to 6,378.90, 9,579.87 and 4,192.02

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Solution

The fourth proportional to 6,378.90, 9,579.87 and 4,192.02 is: 6,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.90 : 9,579.87 = 4,192.02 : x
  2. Step 2: Convert to fraction form
    6,378.90/9,579.87 = 4,192.02/x
  3. Step 3: Cross multiply
    6,378.90x = 9,579.87 × 4,192.02
  4. Step 4: Simplify right side
    6,378.90x = 40,159,006.64
  5. Step 5: Solve for x
    x = 40,159,006.64/6,378.90
  6. Step 6: Final answer
    x = 6,295.60

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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.