Home / 1,256.19-1,884.56-378.76

Finding the Fourth Proportional to 1,256.19, 1,884.56 and 378.76

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Solution

The fourth proportional to 1,256.19, 1,884.56 and 378.76 is: 568.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.19 : 1,884.56 = 378.76 : x
  2. Step 2: Convert to fraction form
    1,256.19/1,884.56 = 378.76/x
  3. Step 3: Cross multiply
    1,256.19x = 1,884.56 × 378.76
  4. Step 4: Simplify right side
    1,256.19x = 713,792.87
  5. Step 5: Solve for x
    x = 713,792.87/1,256.19
  6. Step 6: Final answer
    x = 568.22

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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.