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Finding the Fourth Proportional to 6,656.96, 9,986.01 and 1,913.14

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Solution

The fourth proportional to 6,656.96, 9,986.01 and 1,913.14 is: 2,869.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,656.96 : 9,986.01 = 1,913.14 : x
  2. Step 2: Convert to fraction form
    6,656.96/9,986.01 = 1,913.14/x
  3. Step 3: Cross multiply
    6,656.96x = 9,986.01 × 1,913.14
  4. Step 4: Simplify right side
    6,656.96x = 19,104,635.17
  5. Step 5: Solve for x
    x = 19,104,635.17/6,656.96
  6. Step 6: Final answer
    x = 2,869.87

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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.