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Finding the Fourth Proportional to 2,579.84, 3,557.76 and 1,696.40

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Solution

The fourth proportional to 2,579.84, 3,557.76 and 1,696.40 is: 2,339.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.84 : 3,557.76 = 1,696.40 : x
  2. Step 2: Convert to fraction form
    2,579.84/3,557.76 = 1,696.40/x
  3. Step 3: Cross multiply
    2,579.84x = 3,557.76 × 1,696.40
  4. Step 4: Simplify right side
    2,579.84x = 6,035,384.06
  5. Step 5: Solve for x
    x = 6,035,384.06/2,579.84
  6. Step 6: Final answer
    x = 2,339.44

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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.