Home / 4,391.72-6,587.93-1,271.78

Finding the Fourth Proportional to 4,391.72, 6,587.93 and 1,271.78

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Solution

The fourth proportional to 4,391.72, 6,587.93 and 1,271.78 is: 1,907.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,391.72 : 6,587.93 = 1,271.78 : x
  2. Step 2: Convert to fraction form
    4,391.72/6,587.93 = 1,271.78/x
  3. Step 3: Cross multiply
    4,391.72x = 6,587.93 × 1,271.78
  4. Step 4: Simplify right side
    4,391.72x = 8,378,358.32
  5. Step 5: Solve for x
    x = 8,378,358.32/4,391.72
  6. Step 6: Final answer
    x = 1,907.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.