Home / 3,459.40-5,190.16-1,815.76

Finding the Fourth Proportional to 3,459.40, 5,190.16 and 1,815.76

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Solution

The fourth proportional to 3,459.40, 5,190.16 and 1,815.76 is: 2,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.40 : 5,190.16 = 1,815.76 : x
  2. Step 2: Convert to fraction form
    3,459.40/5,190.16 = 1,815.76/x
  3. Step 3: Cross multiply
    3,459.40x = 5,190.16 × 1,815.76
  4. Step 4: Simplify right side
    3,459.40x = 9,424,084.92
  5. Step 5: Solve for x
    x = 9,424,084.92/3,459.40
  6. Step 6: Final answer
    x = 2,724.20

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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.