Home / 1,916.64-2,644.56-1,253.28

Finding the Fourth Proportional to 1,916.64, 2,644.56 and 1,253.28

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Solution

The fourth proportional to 1,916.64, 2,644.56 and 1,253.28 is: 1,729.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.64 : 2,644.56 = 1,253.28 : x
  2. Step 2: Convert to fraction form
    1,916.64/2,644.56 = 1,253.28/x
  3. Step 3: Cross multiply
    1,916.64x = 2,644.56 × 1,253.28
  4. Step 4: Simplify right side
    1,916.64x = 3,314,374.16
  5. Step 5: Solve for x
    x = 3,314,374.16/1,916.64
  6. Step 6: Final answer
    x = 1,729.26

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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.