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Finding the Fourth Proportional to 6,912.13, 10,368.26 and 1,718

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Solution

The fourth proportional to 6,912.13, 10,368.26 and 1,718 is: 2,577.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.13 : 10,368.26 = 1,718 : x
  2. Step 2: Convert to fraction form
    6,912.13/10,368.26 = 1,718/x
  3. Step 3: Cross multiply
    6,912.13x = 10,368.26 × 1,718
  4. Step 4: Simplify right side
    6,912.13x = 17,812,670.68
  5. Step 5: Solve for x
    x = 17,812,670.68/6,912.13
  6. Step 6: Final answer
    x = 2,577.02

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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.