Home / 1,278.23-1,918.55-1,003.64

Finding the Fourth Proportional to 1,278.23, 1,918.55 and 1,003.64

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Solution

The fourth proportional to 1,278.23, 1,918.55 and 1,003.64 is: 1,506.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.23 : 1,918.55 = 1,003.64 : x
  2. Step 2: Convert to fraction form
    1,278.23/1,918.55 = 1,003.64/x
  3. Step 3: Cross multiply
    1,278.23x = 1,918.55 × 1,003.64
  4. Step 4: Simplify right side
    1,278.23x = 1,925,526.44
  5. Step 5: Solve for x
    x = 1,925,526.44/1,278.23
  6. Step 6: Final answer
    x = 1,506.41

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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.