Home / 3,905.10-5,376.56-3,477.69

Finding the Fourth Proportional to 3,905.10, 5,376.56 and 3,477.69

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Solution

The fourth proportional to 3,905.10, 5,376.56 and 3,477.69 is: 4,788.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.10 : 5,376.56 = 3,477.69 : x
  2. Step 2: Convert to fraction form
    3,905.10/5,376.56 = 3,477.69/x
  3. Step 3: Cross multiply
    3,905.10x = 5,376.56 × 3,477.69
  4. Step 4: Simplify right side
    3,905.10x = 18,697,991.56
  5. Step 5: Solve for x
    x = 18,697,991.56/3,905.10
  6. Step 6: Final answer
    x = 4,788.10

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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.