Home / 6,485.10-9,720.45-3,363.90

Finding the Fourth Proportional to 6,485.10, 9,720.45 and 3,363.90

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Solution

The fourth proportional to 6,485.10, 9,720.45 and 3,363.90 is: 5,042.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.10 : 9,720.45 = 3,363.90 : x
  2. Step 2: Convert to fraction form
    6,485.10/9,720.45 = 3,363.90/x
  3. Step 3: Cross multiply
    6,485.10x = 9,720.45 × 3,363.90
  4. Step 4: Simplify right side
    6,485.10x = 32,698,621.76
  5. Step 5: Solve for x
    x = 32,698,621.76/6,485.10
  6. Step 6: Final answer
    x = 5,042.12

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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.