Home / 3,460.12-5,190.18-2,689

Finding the Fourth Proportional to 3,460.12, 5,190.18 and 2,689

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Solution

The fourth proportional to 3,460.12, 5,190.18 and 2,689 is: 4,033.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.12 : 5,190.18 = 2,689 : x
  2. Step 2: Convert to fraction form
    3,460.12/5,190.18 = 2,689/x
  3. Step 3: Cross multiply
    3,460.12x = 5,190.18 × 2,689
  4. Step 4: Simplify right side
    3,460.12x = 13,956,394.02
  5. Step 5: Solve for x
    x = 13,956,394.02/3,460.12
  6. Step 6: Final answer
    x = 4,033.50

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Double scale
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Similar ratio
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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.