Home / 2,911.29-4,018.26-1,916.02

Finding the Fourth Proportional to 2,911.29, 4,018.26 and 1,916.02

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Solution

The fourth proportional to 2,911.29, 4,018.26 and 1,916.02 is: 2,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.29 : 4,018.26 = 1,916.02 : x
  2. Step 2: Convert to fraction form
    2,911.29/4,018.26 = 1,916.02/x
  3. Step 3: Cross multiply
    2,911.29x = 4,018.26 × 1,916.02
  4. Step 4: Simplify right side
    2,911.29x = 7,699,066.53
  5. Step 5: Solve for x
    x = 7,699,066.53/2,911.29
  6. Step 6: Final answer
    x = 2,644.55

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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.