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Finding the Fourth Proportional to 6,999.69, 9,659.07 and 4,015.45

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Solution

The fourth proportional to 6,999.69, 9,659.07 and 4,015.45 is: 5,541.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999.69 : 9,659.07 = 4,015.45 : x
  2. Step 2: Convert to fraction form
    6,999.69/9,659.07 = 4,015.45/x
  3. Step 3: Cross multiply
    6,999.69x = 9,659.07 × 4,015.45
  4. Step 4: Simplify right side
    6,999.69x = 38,785,488.48
  5. Step 5: Solve for x
    x = 38,785,488.48/6,999.69
  6. Step 6: Final answer
    x = 5,541.03

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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.