Home / 1,206.78-1,801.50-1,153.58

Finding the Fourth Proportional to 1,206.78, 1,801.50 and 1,153.58

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Solution

The fourth proportional to 1,206.78, 1,801.50 and 1,153.58 is: 1,722.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.78 : 1,801.50 = 1,153.58 : x
  2. Step 2: Convert to fraction form
    1,206.78/1,801.50 = 1,153.58/x
  3. Step 3: Cross multiply
    1,206.78x = 1,801.50 × 1,153.58
  4. Step 4: Simplify right side
    1,206.78x = 2,078,174.37
  5. Step 5: Solve for x
    x = 2,078,174.37/1,206.78
  6. Step 6: Final answer
    x = 1,722.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.