Home / 6,312.86-8,711.79-3,518.54

Finding the Fourth Proportional to 6,312.86, 8,711.79 and 3,518.54

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Solution

The fourth proportional to 6,312.86, 8,711.79 and 3,518.54 is: 4,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.86 : 8,711.79 = 3,518.54 : x
  2. Step 2: Convert to fraction form
    6,312.86/8,711.79 = 3,518.54/x
  3. Step 3: Cross multiply
    6,312.86x = 8,711.79 × 3,518.54
  4. Step 4: Simplify right side
    6,312.86x = 30,652,781.59
  5. Step 5: Solve for x
    x = 30,652,781.59/6,312.86
  6. Step 6: Final answer
    x = 4,855.61

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1.5x scale

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.