Home / 1,916.36-2,644.55-1,065.58

Finding the Fourth Proportional to 1,916.36, 2,644.55 and 1,065.58

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Solution

The fourth proportional to 1,916.36, 2,644.55 and 1,065.58 is: 1,470.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.36 : 2,644.55 = 1,065.58 : x
  2. Step 2: Convert to fraction form
    1,916.36/2,644.55 = 1,065.58/x
  3. Step 3: Cross multiply
    1,916.36x = 2,644.55 × 1,065.58
  4. Step 4: Simplify right side
    1,916.36x = 2,817,979.59
  5. Step 5: Solve for x
    x = 2,817,979.59/1,916.36
  6. Step 6: Final answer
    x = 1,470.49

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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.