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Finding the Fourth Proportional to 9,210.34, 13,803.93 and 3,939.15

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Solution

The fourth proportional to 9,210.34, 13,803.93 and 3,939.15 is: 5,903.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.34 : 13,803.93 = 3,939.15 : x
  2. Step 2: Convert to fraction form
    9,210.34/13,803.93 = 3,939.15/x
  3. Step 3: Cross multiply
    9,210.34x = 13,803.93 × 3,939.15
  4. Step 4: Simplify right side
    9,210.34x = 54,375,681.84
  5. Step 5: Solve for x
    x = 54,375,681.84/9,210.34
  6. Step 6: Final answer
    x = 5,903.77

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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.