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Finding the Fourth Proportional to 9,350.66, 12,903.01 and 5,158.64

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Solution

The fourth proportional to 9,350.66, 12,903.01 and 5,158.64 is: 7,118.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,350.66 : 12,903.01 = 5,158.64 : x
  2. Step 2: Convert to fraction form
    9,350.66/12,903.01 = 5,158.64/x
  3. Step 3: Cross multiply
    9,350.66x = 12,903.01 × 5,158.64
  4. Step 4: Simplify right side
    9,350.66x = 66,561,893.20
  5. Step 5: Solve for x
    x = 66,561,893.20/9,350.66
  6. Step 6: Final answer
    x = 7,118.42

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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.