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Finding the Fourth Proportional to 9,349.56, 12,903.12 and 5,158.56

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Solution

The fourth proportional to 9,349.56, 12,903.12 and 5,158.56 is: 7,119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,349.56 : 12,903.12 = 5,158.56 : x
  2. Step 2: Convert to fraction form
    9,349.56/12,903.12 = 5,158.56/x
  3. Step 3: Cross multiply
    9,349.56x = 12,903.12 × 5,158.56
  4. Step 4: Simplify right side
    9,349.56x = 66,561,518.71
  5. Step 5: Solve for x
    x = 66,561,518.71/9,349.56
  6. Step 6: Final answer
    x = 7,119.21

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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.