Home / 1,962.05-2,705.45-1,916.69

Finding the Fourth Proportional to 1,962.05, 2,705.45 and 1,916.69

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Solution

The fourth proportional to 1,962.05, 2,705.45 and 1,916.69 is: 2,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.05 : 2,705.45 = 1,916.69 : x
  2. Step 2: Convert to fraction form
    1,962.05/2,705.45 = 1,916.69/x
  3. Step 3: Cross multiply
    1,962.05x = 2,705.45 × 1,916.69
  4. Step 4: Simplify right side
    1,962.05x = 5,185,485.85
  5. Step 5: Solve for x
    x = 5,185,485.85/1,962.05
  6. Step 6: Final answer
    x = 2,642.90

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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.