Home / 5,647.60-8,460.06-3,178.72

Finding the Fourth Proportional to 5,647.60, 8,460.06 and 3,178.72

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Solution

The fourth proportional to 5,647.60, 8,460.06 and 3,178.72 is: 4,761.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.60 : 8,460.06 = 3,178.72 : x
  2. Step 2: Convert to fraction form
    5,647.60/8,460.06 = 3,178.72/x
  3. Step 3: Cross multiply
    5,647.60x = 8,460.06 × 3,178.72
  4. Step 4: Simplify right side
    5,647.60x = 26,892,161.92
  5. Step 5: Solve for x
    x = 26,892,161.92/5,647.60
  6. Step 6: Final answer
    x = 4,761.70

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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.