Home / 2,405.30-3,318.77-1,410.21

Finding the Fourth Proportional to 2,405.30, 3,318.77 and 1,410.21

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Solution

The fourth proportional to 2,405.30, 3,318.77 and 1,410.21 is: 1,945.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.30 : 3,318.77 = 1,410.21 : x
  2. Step 2: Convert to fraction form
    2,405.30/3,318.77 = 1,410.21/x
  3. Step 3: Cross multiply
    2,405.30x = 3,318.77 × 1,410.21
  4. Step 4: Simplify right side
    2,405.30x = 4,680,166.17
  5. Step 5: Solve for x
    x = 4,680,166.17/2,405.30
  6. Step 6: Final answer
    x = 1,945.78

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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.