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Finding the Fourth Proportional to 9,313.10, 13,963.16 and 4,378

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Solution

The fourth proportional to 9,313.10, 13,963.16 and 4,378 is: 6,563.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,313.10 : 13,963.16 = 4,378 : x
  2. Step 2: Convert to fraction form
    9,313.10/13,963.16 = 4,378/x
  3. Step 3: Cross multiply
    9,313.10x = 13,963.16 × 4,378
  4. Step 4: Simplify right side
    9,313.10x = 61,130,714.48
  5. Step 5: Solve for x
    x = 61,130,714.48/9,313.10
  6. Step 6: Final answer
    x = 6,563.95

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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.