Home / 1,916.04-2,872.14-1,338.76

Finding the Fourth Proportional to 1,916.04, 2,872.14 and 1,338.76

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Solution

The fourth proportional to 1,916.04, 2,872.14 and 1,338.76 is: 2,006.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.04 : 2,872.14 = 1,338.76 : x
  2. Step 2: Convert to fraction form
    1,916.04/2,872.14 = 1,338.76/x
  3. Step 3: Cross multiply
    1,916.04x = 2,872.14 × 1,338.76
  4. Step 4: Simplify right side
    1,916.04x = 3,845,106.15
  5. Step 5: Solve for x
    x = 3,845,106.15/1,916.04
  6. Step 6: Final answer
    x = 2,006.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.