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Finding the Fourth Proportional to 1,696.58, 2,542.67 and 916.91

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Solution

The fourth proportional to 1,696.58, 2,542.67 and 916.91 is: 1,374.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,696.58 : 2,542.67 = 916.91 : x
  2. Step 2: Convert to fraction form
    1,696.58/2,542.67 = 916.91/x
  3. Step 3: Cross multiply
    1,696.58x = 2,542.67 × 916.91
  4. Step 4: Simplify right side
    1,696.58x = 2,331,382.25
  5. Step 5: Solve for x
    x = 2,331,382.25/1,696.58
  6. Step 6: Final answer
    x = 1,374.17

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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.