Home / 3,428.02-4,728.81-2,166.76

Finding the Fourth Proportional to 3,428.02, 4,728.81 and 2,166.76

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Solution

The fourth proportional to 3,428.02, 4,728.81 and 2,166.76 is: 2,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.02 : 4,728.81 = 2,166.76 : x
  2. Step 2: Convert to fraction form
    3,428.02/4,728.81 = 2,166.76/x
  3. Step 3: Cross multiply
    3,428.02x = 4,728.81 × 2,166.76
  4. Step 4: Simplify right side
    3,428.02x = 10,246,196.36
  5. Step 5: Solve for x
    x = 10,246,196.36/3,428.02
  6. Step 6: Final answer
    x = 2,988.95

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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.