Home / 1,917.04-2,876.60-1,338.80

Finding the Fourth Proportional to 1,917.04, 2,876.60 and 1,338.80

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Solution

The fourth proportional to 1,917.04, 2,876.60 and 1,338.80 is: 2,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.04 : 2,876.60 = 1,338.80 : x
  2. Step 2: Convert to fraction form
    1,917.04/2,876.60 = 1,338.80/x
  3. Step 3: Cross multiply
    1,917.04x = 2,876.60 × 1,338.80
  4. Step 4: Simplify right side
    1,917.04x = 3,851,192.08
  5. Step 5: Solve for x
    x = 3,851,192.08/1,917.04
  6. Step 6: Final answer
    x = 2,008.93

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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.