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Finding the Fourth Proportional to 6,615.52, 9,921.08 and 1,935.80

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Solution

The fourth proportional to 6,615.52, 9,921.08 and 1,935.80 is: 2,903.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.52 : 9,921.08 = 1,935.80 : x
  2. Step 2: Convert to fraction form
    6,615.52/9,921.08 = 1,935.80/x
  3. Step 3: Cross multiply
    6,615.52x = 9,921.08 × 1,935.80
  4. Step 4: Simplify right side
    6,615.52x = 19,205,219.10
  5. Step 5: Solve for x
    x = 19,205,219.10/6,615.52
  6. Step 6: Final answer
    x = 2,903.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.