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Finding the Fourth Proportional to 6,720.31, 10,030.12 and 6,609.45

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Solution

The fourth proportional to 6,720.31, 10,030.12 and 6,609.45 is: 9,864.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.31 : 10,030.12 = 6,609.45 : x
  2. Step 2: Convert to fraction form
    6,720.31/10,030.12 = 6,609.45/x
  3. Step 3: Cross multiply
    6,720.31x = 10,030.12 × 6,609.45
  4. Step 4: Simplify right side
    6,720.31x = 66,293,610.12
  5. Step 5: Solve for x
    x = 66,293,610.12/6,720.31
  6. Step 6: Final answer
    x = 9,864.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.