Home / 4,820.86-6,647.49-3,139.17

Finding the Fourth Proportional to 4,820.86, 6,647.49 and 3,139.17

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Solution

The fourth proportional to 4,820.86, 6,647.49 and 3,139.17 is: 4,328.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,820.86 : 6,647.49 = 3,139.17 : x
  2. Step 2: Convert to fraction form
    4,820.86/6,647.49 = 3,139.17/x
  3. Step 3: Cross multiply
    4,820.86x = 6,647.49 × 3,139.17
  4. Step 4: Simplify right side
    4,820.86x = 20,867,601.18
  5. Step 5: Solve for x
    x = 20,867,601.18/4,820.86
  6. Step 6: Final answer
    x = 4,328.61

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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.