Home / 1,898.84-2,620.40-1,113.36

Finding the Fourth Proportional to 1,898.84, 2,620.40 and 1,113.36

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Solution

The fourth proportional to 1,898.84, 2,620.40 and 1,113.36 is: 1,536.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.84 : 2,620.40 = 1,113.36 : x
  2. Step 2: Convert to fraction form
    1,898.84/2,620.40 = 1,113.36/x
  3. Step 3: Cross multiply
    1,898.84x = 2,620.40 × 1,113.36
  4. Step 4: Simplify right side
    1,898.84x = 2,917,448.54
  5. Step 5: Solve for x
    x = 2,917,448.54/1,898.84
  6. Step 6: Final answer
    x = 1,536.44

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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.