Home / 1,869.51-2,580.97-1,123.66

Finding the Fourth Proportional to 1,869.51, 2,580.97 and 1,123.66

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Solution

The fourth proportional to 1,869.51, 2,580.97 and 1,123.66 is: 1,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.51 : 2,580.97 = 1,123.66 : x
  2. Step 2: Convert to fraction form
    1,869.51/2,580.97 = 1,123.66/x
  3. Step 3: Cross multiply
    1,869.51x = 2,580.97 × 1,123.66
  4. Step 4: Simplify right side
    1,869.51x = 2,900,132.75
  5. Step 5: Solve for x
    x = 2,900,132.75/1,869.51
  6. Step 6: Final answer
    x = 1,551.28

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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.