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Finding the Fourth Proportional to 2,284.48, 3,426 and 985.64

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Solution

The fourth proportional to 2,284.48, 3,426 and 985.64 is: 1,478.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,284.48 : 3,426 = 985.64 : x
  2. Step 2: Convert to fraction form
    2,284.48/3,426 = 985.64/x
  3. Step 3: Cross multiply
    2,284.48x = 3,426 × 985.64
  4. Step 4: Simplify right side
    2,284.48x = 3,376,802.64
  5. Step 5: Solve for x
    x = 3,376,802.64/2,284.48
  6. Step 6: Final answer
    x = 1,478.15

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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.