Home / 6,421.34-9,640.83-3,303.92

Finding the Fourth Proportional to 6,421.34, 9,640.83 and 3,303.92

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Solution

The fourth proportional to 6,421.34, 9,640.83 and 3,303.92 is: 4,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.34 : 9,640.83 = 3,303.92 : x
  2. Step 2: Convert to fraction form
    6,421.34/9,640.83 = 3,303.92/x
  3. Step 3: Cross multiply
    6,421.34x = 9,640.83 × 3,303.92
  4. Step 4: Simplify right side
    6,421.34x = 31,852,531.05
  5. Step 5: Solve for x
    x = 31,852,531.05/6,421.34
  6. Step 6: Final answer
    x = 4,960.42

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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.