Home / 1,868.51-2,579.59-1,122.66

Finding the Fourth Proportional to 1,868.51, 2,579.59 and 1,122.66

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Solution

The fourth proportional to 1,868.51, 2,579.59 and 1,122.66 is: 1,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.51 : 2,579.59 = 1,122.66 : x
  2. Step 2: Convert to fraction form
    1,868.51/2,579.59 = 1,122.66/x
  3. Step 3: Cross multiply
    1,868.51x = 2,579.59 × 1,122.66
  4. Step 4: Simplify right side
    1,868.51x = 2,895,999.70
  5. Step 5: Solve for x
    x = 2,895,999.70/1,868.51
  6. Step 6: Final answer
    x = 1,549.90

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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.