Home / 3,140.63-4,333.99-1,724.34

Finding the Fourth Proportional to 3,140.63, 4,333.99 and 1,724.34

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Solution

The fourth proportional to 3,140.63, 4,333.99 and 1,724.34 is: 2,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.63 : 4,333.99 = 1,724.34 : x
  2. Step 2: Convert to fraction form
    3,140.63/4,333.99 = 1,724.34/x
  3. Step 3: Cross multiply
    3,140.63x = 4,333.99 × 1,724.34
  4. Step 4: Simplify right side
    3,140.63x = 7,473,263.69
  5. Step 5: Solve for x
    x = 7,473,263.69/3,140.63
  6. Step 6: Final answer
    x = 2,379.55

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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.