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Finding the Fourth Proportional to 2,406.70, 3,321.02 and 1,411.80

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Solution

The fourth proportional to 2,406.70, 3,321.02 and 1,411.80 is: 1,948.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,406.70 : 3,321.02 = 1,411.80 : x
  2. Step 2: Convert to fraction form
    2,406.70/3,321.02 = 1,411.80/x
  3. Step 3: Cross multiply
    2,406.70x = 3,321.02 × 1,411.80
  4. Step 4: Simplify right side
    2,406.70x = 4,688,616.04
  5. Step 5: Solve for x
    x = 4,688,616.04/2,406.70
  6. Step 6: Final answer
    x = 1,948.15

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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.