Home / 1,830.19-2,525.94-1,387.36

Finding the Fourth Proportional to 1,830.19, 2,525.94 and 1,387.36

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Solution

The fourth proportional to 1,830.19, 2,525.94 and 1,387.36 is: 1,914.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.19 : 2,525.94 = 1,387.36 : x
  2. Step 2: Convert to fraction form
    1,830.19/2,525.94 = 1,387.36/x
  3. Step 3: Cross multiply
    1,830.19x = 2,525.94 × 1,387.36
  4. Step 4: Simplify right side
    1,830.19x = 3,504,388.12
  5. Step 5: Solve for x
    x = 3,504,388.12/1,830.19
  6. Step 6: Final answer
    x = 1,914.77

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1.5x scale

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.