Home / 1,397.14-1,928.58-1,199.86

Finding the Fourth Proportional to 1,397.14, 1,928.58 and 1,199.86

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Solution

The fourth proportional to 1,397.14, 1,928.58 and 1,199.86 is: 1,656.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.14 : 1,928.58 = 1,199.86 : x
  2. Step 2: Convert to fraction form
    1,397.14/1,928.58 = 1,199.86/x
  3. Step 3: Cross multiply
    1,397.14x = 1,928.58 × 1,199.86
  4. Step 4: Simplify right side
    1,397.14x = 2,314,026.00
  5. Step 5: Solve for x
    x = 2,314,026.00/1,397.14
  6. Step 6: Final answer
    x = 1,656.26

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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.