Home / 6,920.12-10,378.56-3,406.52

Finding the Fourth Proportional to 6,920.12, 10,378.56 and 3,406.52

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Solution

The fourth proportional to 6,920.12, 10,378.56 and 3,406.52 is: 5,108.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.12 : 10,378.56 = 3,406.52 : x
  2. Step 2: Convert to fraction form
    6,920.12/10,378.56 = 3,406.52/x
  3. Step 3: Cross multiply
    6,920.12x = 10,378.56 × 3,406.52
  4. Step 4: Simplify right side
    6,920.12x = 35,354,772.21
  5. Step 5: Solve for x
    x = 35,354,772.21/6,920.12
  6. Step 6: Final answer
    x = 5,108.98

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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.