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Finding the Fourth Proportional to 9,369.16, 12,929.22 and 5,177.32

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Solution

The fourth proportional to 9,369.16, 12,929.22 and 5,177.32 is: 7,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.16 : 12,929.22 = 5,177.32 : x
  2. Step 2: Convert to fraction form
    9,369.16/12,929.22 = 5,177.32/x
  3. Step 3: Cross multiply
    9,369.16x = 12,929.22 × 5,177.32
  4. Step 4: Simplify right side
    9,369.16x = 66,938,709.29
  5. Step 5: Solve for x
    x = 66,938,709.29/9,369.16
  6. Step 6: Final answer
    x = 7,144.58

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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.