Home / 1,327.16-1,830.21-1,078.13

Finding the Fourth Proportional to 1,327.16, 1,830.21 and 1,078.13

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Solution

The fourth proportional to 1,327.16, 1,830.21 and 1,078.13 is: 1,486.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.16 : 1,830.21 = 1,078.13 : x
  2. Step 2: Convert to fraction form
    1,327.16/1,830.21 = 1,078.13/x
  3. Step 3: Cross multiply
    1,327.16x = 1,830.21 × 1,078.13
  4. Step 4: Simplify right side
    1,327.16x = 1,973,204.31
  5. Step 5: Solve for x
    x = 1,973,204.31/1,327.16
  6. Step 6: Final answer
    x = 1,486.79

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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.