Home / 1,336.56-2,005.16-412.10

Finding the Fourth Proportional to 1,336.56, 2,005.16 and 412.10

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Solution

The fourth proportional to 1,336.56, 2,005.16 and 412.10 is: 618.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.56 : 2,005.16 = 412.10 : x
  2. Step 2: Convert to fraction form
    1,336.56/2,005.16 = 412.10/x
  3. Step 3: Cross multiply
    1,336.56x = 2,005.16 × 412.10
  4. Step 4: Simplify right side
    1,336.56x = 826,325.63
  5. Step 5: Solve for x
    x = 826,325.63/1,336.56
  6. Step 6: Final answer
    x = 618.25

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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.