Home / 5,461.54-8,178.86-3,115.77

Finding the Fourth Proportional to 5,461.54, 8,178.86 and 3,115.77

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Solution

The fourth proportional to 5,461.54, 8,178.86 and 3,115.77 is: 4,665.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,461.54 : 8,178.86 = 3,115.77 : x
  2. Step 2: Convert to fraction form
    5,461.54/8,178.86 = 3,115.77/x
  3. Step 3: Cross multiply
    5,461.54x = 8,178.86 × 3,115.77
  4. Step 4: Simplify right side
    5,461.54x = 25,483,406.21
  5. Step 5: Solve for x
    x = 25,483,406.21/5,461.54
  6. Step 6: Final answer
    x = 4,665.97

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1.5x scale

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.