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Finding the Fourth Proportional to 1,916.52, 2,640.54 and 1,326.24

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Solution

The fourth proportional to 1,916.52, 2,640.54 and 1,326.24 is: 1,827.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.52 : 2,640.54 = 1,326.24 : x
  2. Step 2: Convert to fraction form
    1,916.52/2,640.54 = 1,326.24/x
  3. Step 3: Cross multiply
    1,916.52x = 2,640.54 × 1,326.24
  4. Step 4: Simplify right side
    1,916.52x = 3,501,989.77
  5. Step 5: Solve for x
    x = 3,501,989.77/1,916.52
  6. Step 6: Final answer
    x = 1,827.26

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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.