Home / 1,256.18-1,881.44-670.15

Finding the Fourth Proportional to 1,256.18, 1,881.44 and 670.15

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Solution

The fourth proportional to 1,256.18, 1,881.44 and 670.15 is: 1,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.18 : 1,881.44 = 670.15 : x
  2. Step 2: Convert to fraction form
    1,256.18/1,881.44 = 670.15/x
  3. Step 3: Cross multiply
    1,256.18x = 1,881.44 × 670.15
  4. Step 4: Simplify right side
    1,256.18x = 1,260,838.96
  5. Step 5: Solve for x
    x = 1,260,838.96/1,256.18
  6. Step 6: Final answer
    x = 1,003.71

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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.