Home / 3,459.49-5,189.56-1,378.99

Finding the Fourth Proportional to 3,459.49, 5,189.56 and 1,378.99

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Solution

The fourth proportional to 3,459.49, 5,189.56 and 1,378.99 is: 2,068.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.49 : 5,189.56 = 1,378.99 : x
  2. Step 2: Convert to fraction form
    3,459.49/5,189.56 = 1,378.99/x
  3. Step 3: Cross multiply
    3,459.49x = 5,189.56 × 1,378.99
  4. Step 4: Simplify right side
    3,459.49x = 7,156,344.45
  5. Step 5: Solve for x
    x = 7,156,344.45/3,459.49
  6. Step 6: Final answer
    x = 2,068.61

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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.