Home / 1,907.42-2,857.48-1,290.06

Finding the Fourth Proportional to 1,907.42, 2,857.48 and 1,290.06

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Solution

The fourth proportional to 1,907.42, 2,857.48 and 1,290.06 is: 1,932.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.42 : 2,857.48 = 1,290.06 : x
  2. Step 2: Convert to fraction form
    1,907.42/2,857.48 = 1,290.06/x
  3. Step 3: Cross multiply
    1,907.42x = 2,857.48 × 1,290.06
  4. Step 4: Simplify right side
    1,907.42x = 3,686,317.42
  5. Step 5: Solve for x
    x = 3,686,317.42/1,907.42
  6. Step 6: Final answer
    x = 1,932.62

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1.5x scale

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.