Home / 1,400.19-2,097.08-670.28

Finding the Fourth Proportional to 1,400.19, 2,097.08 and 670.28

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Solution

The fourth proportional to 1,400.19, 2,097.08 and 670.28 is: 1,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.19 : 2,097.08 = 670.28 : x
  2. Step 2: Convert to fraction form
    1,400.19/2,097.08 = 670.28/x
  3. Step 3: Cross multiply
    1,400.19x = 2,097.08 × 670.28
  4. Step 4: Simplify right side
    1,400.19x = 1,405,630.78
  5. Step 5: Solve for x
    x = 1,405,630.78/1,400.19
  6. Step 6: Final answer
    x = 1,003.89

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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.