Home / 6,997.12-9,639.60-4,869.00

Finding the Fourth Proportional to 6,997.12, 9,639.60 and 4,869.00

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Solution

The fourth proportional to 6,997.12, 9,639.60 and 4,869.00 is: 6,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,997.12 : 9,639.60 = 4,869.00 : x
  2. Step 2: Convert to fraction form
    6,997.12/9,639.60 = 4,869.00/x
  3. Step 3: Cross multiply
    6,997.12x = 9,639.60 × 4,869.00
  4. Step 4: Simplify right side
    6,997.12x = 46,935,164.20
  5. Step 5: Solve for x
    x = 46,935,164.20/6,997.12
  6. Step 6: Final answer
    x = 6,707.78

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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.