Home / 1,255.04-1,878.48-1,135.28

Finding the Fourth Proportional to 1,255.04, 1,878.48 and 1,135.28

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Solution

The fourth proportional to 1,255.04, 1,878.48 and 1,135.28 is: 1,699.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.04 : 1,878.48 = 1,135.28 : x
  2. Step 2: Convert to fraction form
    1,255.04/1,878.48 = 1,135.28/x
  3. Step 3: Cross multiply
    1,255.04x = 1,878.48 × 1,135.28
  4. Step 4: Simplify right side
    1,255.04x = 2,132,600.77
  5. Step 5: Solve for x
    x = 2,132,600.77/1,255.04
  6. Step 6: Final answer
    x = 1,699.23

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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.