Home / 1,224.51-1,688.41-1,137.03

Finding the Fourth Proportional to 1,224.51, 1,688.41 and 1,137.03

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Solution

The fourth proportional to 1,224.51, 1,688.41 and 1,137.03 is: 1,567.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.51 : 1,688.41 = 1,137.03 : x
  2. Step 2: Convert to fraction form
    1,224.51/1,688.41 = 1,137.03/x
  3. Step 3: Cross multiply
    1,224.51x = 1,688.41 × 1,137.03
  4. Step 4: Simplify right side
    1,224.51x = 1,919,772.82
  5. Step 5: Solve for x
    x = 1,919,772.82/1,224.51
  6. Step 6: Final answer
    x = 1,567.79

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Double scale
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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.