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Finding the Fourth Proportional to 6,600.99, 9,901.52 and 1,921.02

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Solution

The fourth proportional to 6,600.99, 9,901.52 and 1,921.02 is: 2,881.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.99 : 9,901.52 = 1,921.02 : x
  2. Step 2: Convert to fraction form
    6,600.99/9,901.52 = 1,921.02/x
  3. Step 3: Cross multiply
    6,600.99x = 9,901.52 × 1,921.02
  4. Step 4: Simplify right side
    6,600.99x = 19,020,973.02
  5. Step 5: Solve for x
    x = 19,020,973.02/6,600.99
  6. Step 6: Final answer
    x = 2,881.53

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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.