Home / 1,916.02-2,643.13-1,286.69

Finding the Fourth Proportional to 1,916.02, 2,643.13 and 1,286.69

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Solution

The fourth proportional to 1,916.02, 2,643.13 and 1,286.69 is: 1,774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.02 : 2,643.13 = 1,286.69 : x
  2. Step 2: Convert to fraction form
    1,916.02/2,643.13 = 1,286.69/x
  3. Step 3: Cross multiply
    1,916.02x = 2,643.13 × 1,286.69
  4. Step 4: Simplify right side
    1,916.02x = 3,400,877.33
  5. Step 5: Solve for x
    x = 3,400,877.33/1,916.02
  6. Step 6: Final answer
    x = 1,774.97

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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.