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Finding the Fourth Proportional to 7,009.56, 9,673.08 and 4,215.60

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Solution

The fourth proportional to 7,009.56, 9,673.08 and 4,215.60 is: 5,817.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,009.56 : 9,673.08 = 4,215.60 : x
  2. Step 2: Convert to fraction form
    7,009.56/9,673.08 = 4,215.60/x
  3. Step 3: Cross multiply
    7,009.56x = 9,673.08 × 4,215.60
  4. Step 4: Simplify right side
    7,009.56x = 40,777,836.05
  5. Step 5: Solve for x
    x = 40,777,836.05/7,009.56
  6. Step 6: Final answer
    x = 5,817.46

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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.