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Finding the Fourth Proportional to 2,313, 3,190.48 and 1,318.08

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Solution

The fourth proportional to 2,313, 3,190.48 and 1,318.08 is: 1,818.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313 : 3,190.48 = 1,318.08 : x
  2. Step 2: Convert to fraction form
    2,313/3,190.48 = 1,318.08/x
  3. Step 3: Cross multiply
    2,313x = 3,190.48 × 1,318.08
  4. Step 4: Simplify right side
    2,313x = 4,205,307.88
  5. Step 5: Solve for x
    x = 4,205,307.88/2,313
  6. Step 6: Final answer
    x = 1,818.12

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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.