Home / 2,405.12-3,315.84-1,705.28

Finding the Fourth Proportional to 2,405.12, 3,315.84 and 1,705.28

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Solution

The fourth proportional to 2,405.12, 3,315.84 and 1,705.28 is: 2,351.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.12 : 3,315.84 = 1,705.28 : x
  2. Step 2: Convert to fraction form
    2,405.12/3,315.84 = 1,705.28/x
  3. Step 3: Cross multiply
    2,405.12x = 3,315.84 × 1,705.28
  4. Step 4: Simplify right side
    2,405.12x = 5,654,435.64
  5. Step 5: Solve for x
    x = 5,654,435.64/2,405.12
  6. Step 6: Final answer
    x = 2,351.00

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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.