Home / 1,512.56-2,087.36-1,133.78

Finding the Fourth Proportional to 1,512.56, 2,087.36 and 1,133.78

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Solution

The fourth proportional to 1,512.56, 2,087.36 and 1,133.78 is: 1,564.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.56 : 2,087.36 = 1,133.78 : x
  2. Step 2: Convert to fraction form
    1,512.56/2,087.36 = 1,133.78/x
  3. Step 3: Cross multiply
    1,512.56x = 2,087.36 × 1,133.78
  4. Step 4: Simplify right side
    1,512.56x = 2,366,607.02
  5. Step 5: Solve for x
    x = 2,366,607.02/1,512.56
  6. Step 6: Final answer
    x = 1,564.64

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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.