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Finding the Fourth Proportional to 3,477.36, 5,213.73 and 1,918.11

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Solution

The fourth proportional to 3,477.36, 5,213.73 and 1,918.11 is: 2,875.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,477.36 : 5,213.73 = 1,918.11 : x
  2. Step 2: Convert to fraction form
    3,477.36/5,213.73 = 1,918.11/x
  3. Step 3: Cross multiply
    3,477.36x = 5,213.73 × 1,918.11
  4. Step 4: Simplify right side
    3,477.36x = 10,000,507.65
  5. Step 5: Solve for x
    x = 10,000,507.65/3,477.36
  6. Step 6: Final answer
    x = 2,875.89

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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.