Home / 2,758.19-3,807.07-1,639.31

Finding the Fourth Proportional to 2,758.19, 3,807.07 and 1,639.31

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Solution

The fourth proportional to 2,758.19, 3,807.07 and 1,639.31 is: 2,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.19 : 3,807.07 = 1,639.31 : x
  2. Step 2: Convert to fraction form
    2,758.19/3,807.07 = 1,639.31/x
  3. Step 3: Cross multiply
    2,758.19x = 3,807.07 × 1,639.31
  4. Step 4: Simplify right side
    2,758.19x = 6,240,944.79
  5. Step 5: Solve for x
    x = 6,240,944.79/2,758.19
  6. Step 6: Final answer
    x = 2,262.70

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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.