Home / 2,807.09-3,871.86-1,628.18

Finding the Fourth Proportional to 2,807.09, 3,871.86 and 1,628.18

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Solution

The fourth proportional to 2,807.09, 3,871.86 and 1,628.18 is: 2,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.09 : 3,871.86 = 1,628.18 : x
  2. Step 2: Convert to fraction form
    2,807.09/3,871.86 = 1,628.18/x
  3. Step 3: Cross multiply
    2,807.09x = 3,871.86 × 1,628.18
  4. Step 4: Simplify right side
    2,807.09x = 6,304,085.01
  5. Step 5: Solve for x
    x = 6,304,085.01/2,807.09
  6. Step 6: Final answer
    x = 2,245.77

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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.