Home / 2,816.84-3,885.02-2,628.21

Finding the Fourth Proportional to 2,816.84, 3,885.02 and 2,628.21

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Solution

The fourth proportional to 2,816.84, 3,885.02 and 2,628.21 is: 3,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.84 : 3,885.02 = 2,628.21 : x
  2. Step 2: Convert to fraction form
    2,816.84/3,885.02 = 2,628.21/x
  3. Step 3: Cross multiply
    2,816.84x = 3,885.02 × 2,628.21
  4. Step 4: Simplify right side
    2,816.84x = 10,210,648.41
  5. Step 5: Solve for x
    x = 10,210,648.41/2,816.84
  6. Step 6: Final answer
    x = 3,624.86

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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.