Home / 1,551.56-2,138.40-1,370.52

Finding the Fourth Proportional to 1,551.56, 2,138.40 and 1,370.52

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Solution

The fourth proportional to 1,551.56, 2,138.40 and 1,370.52 is: 1,888.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.56 : 2,138.40 = 1,370.52 : x
  2. Step 2: Convert to fraction form
    1,551.56/2,138.40 = 1,370.52/x
  3. Step 3: Cross multiply
    1,551.56x = 2,138.40 × 1,370.52
  4. Step 4: Simplify right side
    1,551.56x = 2,930,719.97
  5. Step 5: Solve for x
    x = 2,930,719.97/1,551.56
  6. Step 6: Final answer
    x = 1,888.89

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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.