Home / 1,251.78-1,725.56-1,030.35

Finding the Fourth Proportional to 1,251.78, 1,725.56 and 1,030.35

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Solution

The fourth proportional to 1,251.78, 1,725.56 and 1,030.35 is: 1,420.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.78 : 1,725.56 = 1,030.35 : x
  2. Step 2: Convert to fraction form
    1,251.78/1,725.56 = 1,030.35/x
  3. Step 3: Cross multiply
    1,251.78x = 1,725.56 × 1,030.35
  4. Step 4: Simplify right side
    1,251.78x = 1,777,930.75
  5. Step 5: Solve for x
    x = 1,777,930.75/1,251.78
  6. Step 6: Final answer
    x = 1,420.32

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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.