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Finding the Fourth Proportional to 6,615.32, 9,128.65 and 3,630.68

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Solution

The fourth proportional to 6,615.32, 9,128.65 and 3,630.68 is: 5,010.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.32 : 9,128.65 = 3,630.68 : x
  2. Step 2: Convert to fraction form
    6,615.32/9,128.65 = 3,630.68/x
  3. Step 3: Cross multiply
    6,615.32x = 9,128.65 × 3,630.68
  4. Step 4: Simplify right side
    6,615.32x = 33,143,206.98
  5. Step 5: Solve for x
    x = 33,143,206.98/6,615.32
  6. Step 6: Final answer
    x = 5,010.07

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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.