Home / 1,870.75-2,579.70-1,241.05

Finding the Fourth Proportional to 1,870.75, 2,579.70 and 1,241.05

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Solution

The fourth proportional to 1,870.75, 2,579.70 and 1,241.05 is: 1,711.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.75 : 2,579.70 = 1,241.05 : x
  2. Step 2: Convert to fraction form
    1,870.75/2,579.70 = 1,241.05/x
  3. Step 3: Cross multiply
    1,870.75x = 2,579.70 × 1,241.05
  4. Step 4: Simplify right side
    1,870.75x = 3,201,523.79
  5. Step 5: Solve for x
    x = 3,201,523.79/1,870.75
  6. Step 6: Final answer
    x = 1,711.36

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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.