Home / 3,140.50-4,333.94-1,724.32

Finding the Fourth Proportional to 3,140.50, 4,333.94 and 1,724.32

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Solution

The fourth proportional to 3,140.50, 4,333.94 and 1,724.32 is: 2,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.50 : 4,333.94 = 1,724.32 : x
  2. Step 2: Convert to fraction form
    3,140.50/4,333.94 = 1,724.32/x
  3. Step 3: Cross multiply
    3,140.50x = 4,333.94 × 1,724.32
  4. Step 4: Simplify right side
    3,140.50x = 7,473,098.31
  5. Step 5: Solve for x
    x = 7,473,098.31/3,140.50
  6. Step 6: Final answer
    x = 2,379.59

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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.