Home / 1,970.39-2,950.37-1,189.35

Finding the Fourth Proportional to 1,970.39, 2,950.37 and 1,189.35

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Solution

The fourth proportional to 1,970.39, 2,950.37 and 1,189.35 is: 1,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.39 : 2,950.37 = 1,189.35 : x
  2. Step 2: Convert to fraction form
    1,970.39/2,950.37 = 1,189.35/x
  3. Step 3: Cross multiply
    1,970.39x = 2,950.37 × 1,189.35
  4. Step 4: Simplify right side
    1,970.39x = 3,509,027.76
  5. Step 5: Solve for x
    x = 3,509,027.76/1,970.39
  6. Step 6: Final answer
    x = 1,780.88

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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.