Home / 6,999.05-9,656.75-4,872.20

Finding the Fourth Proportional to 6,999.05, 9,656.75 and 4,872.20

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Solution

The fourth proportional to 6,999.05, 9,656.75 and 4,872.20 is: 6,722.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999.05 : 9,656.75 = 4,872.20 : x
  2. Step 2: Convert to fraction form
    6,999.05/9,656.75 = 4,872.20/x
  3. Step 3: Cross multiply
    6,999.05x = 9,656.75 × 4,872.20
  4. Step 4: Simplify right side
    6,999.05x = 47,049,544.71
  5. Step 5: Solve for x
    x = 47,049,544.71/6,999.05
  6. Step 6: Final answer
    x = 6,722.28

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1.5x scale

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.