Home / 3,051.40-4,209.70-1,724.80

Finding the Fourth Proportional to 3,051.40, 4,209.70 and 1,724.80

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Solution

The fourth proportional to 3,051.40, 4,209.70 and 1,724.80 is: 2,379.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.40 : 4,209.70 = 1,724.80 : x
  2. Step 2: Convert to fraction form
    3,051.40/4,209.70 = 1,724.80/x
  3. Step 3: Cross multiply
    3,051.40x = 4,209.70 × 1,724.80
  4. Step 4: Simplify right side
    3,051.40x = 7,260,890.56
  5. Step 5: Solve for x
    x = 7,260,890.56/3,051.40
  6. Step 6: Final answer
    x = 2,379.53

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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.