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Finding the Fourth Proportional to 2,892.79, 3,990.63 and 1,713.30

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Solution

The fourth proportional to 2,892.79, 3,990.63 and 1,713.30 is: 2,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,892.79 : 3,990.63 = 1,713.30 : x
  2. Step 2: Convert to fraction form
    2,892.79/3,990.63 = 1,713.30/x
  3. Step 3: Cross multiply
    2,892.79x = 3,990.63 × 1,713.30
  4. Step 4: Simplify right side
    2,892.79x = 6,837,146.38
  5. Step 5: Solve for x
    x = 6,837,146.38/2,892.79
  6. Step 6: Final answer
    x = 2,363.51

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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.