Home / 1,975.02-2,725.80-1,189.14

Finding the Fourth Proportional to 1,975.02, 2,725.80 and 1,189.14

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Solution

The fourth proportional to 1,975.02, 2,725.80 and 1,189.14 is: 1,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.02 : 2,725.80 = 1,189.14 : x
  2. Step 2: Convert to fraction form
    1,975.02/2,725.80 = 1,189.14/x
  3. Step 3: Cross multiply
    1,975.02x = 2,725.80 × 1,189.14
  4. Step 4: Simplify right side
    1,975.02x = 3,241,357.81
  5. Step 5: Solve for x
    x = 3,241,357.81/1,975.02
  6. Step 6: Final answer
    x = 1,641.18

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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.