Home / 4,215.30-6,316.50-2,129.49

Finding the Fourth Proportional to 4,215.30, 6,316.50 and 2,129.49

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Solution

The fourth proportional to 4,215.30, 6,316.50 and 2,129.49 is: 3,190.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.30 : 6,316.50 = 2,129.49 : x
  2. Step 2: Convert to fraction form
    4,215.30/6,316.50 = 2,129.49/x
  3. Step 3: Cross multiply
    4,215.30x = 6,316.50 × 2,129.49
  4. Step 4: Simplify right side
    4,215.30x = 13,450,923.59
  5. Step 5: Solve for x
    x = 13,450,923.59/4,215.30
  6. Step 6: Final answer
    x = 3,190.98

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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.