Home / 2,107.40-2,907.68-1,400.27

Finding the Fourth Proportional to 2,107.40, 2,907.68 and 1,400.27

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Solution

The fourth proportional to 2,107.40, 2,907.68 and 1,400.27 is: 1,932.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.40 : 2,907.68 = 1,400.27 : x
  2. Step 2: Convert to fraction form
    2,107.40/2,907.68 = 1,400.27/x
  3. Step 3: Cross multiply
    2,107.40x = 2,907.68 × 1,400.27
  4. Step 4: Simplify right side
    2,107.40x = 4,071,515.53
  5. Step 5: Solve for x
    x = 4,071,515.53/2,107.40
  6. Step 6: Final answer
    x = 1,932.01

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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.