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Finding the Fourth Proportional to 9,328.56, 12,874.14 and 5,137.56

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Solution

The fourth proportional to 9,328.56, 12,874.14 and 5,137.56 is: 7,090.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.56 : 12,874.14 = 5,137.56 : x
  2. Step 2: Convert to fraction form
    9,328.56/12,874.14 = 5,137.56/x
  3. Step 3: Cross multiply
    9,328.56x = 12,874.14 × 5,137.56
  4. Step 4: Simplify right side
    9,328.56x = 66,141,666.70
  5. Step 5: Solve for x
    x = 66,141,666.70/9,328.56
  6. Step 6: Final answer
    x = 7,090.23

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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.