Home / 1,914.80-2,642.36-1,170.01

Finding the Fourth Proportional to 1,914.80, 2,642.36 and 1,170.01

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Solution

The fourth proportional to 1,914.80, 2,642.36 and 1,170.01 is: 1,614.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.80 : 2,642.36 = 1,170.01 : x
  2. Step 2: Convert to fraction form
    1,914.80/2,642.36 = 1,170.01/x
  3. Step 3: Cross multiply
    1,914.80x = 2,642.36 × 1,170.01
  4. Step 4: Simplify right side
    1,914.80x = 3,091,575.17
  5. Step 5: Solve for x
    x = 3,091,575.17/1,914.80
  6. Step 6: Final answer
    x = 1,614.57

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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.