Home / 3,405.12-5,107.68-1,065.14

Finding the Fourth Proportional to 3,405.12, 5,107.68 and 1,065.14

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Solution

The fourth proportional to 3,405.12, 5,107.68 and 1,065.14 is: 1,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.12 : 5,107.68 = 1,065.14 : x
  2. Step 2: Convert to fraction form
    3,405.12/5,107.68 = 1,065.14/x
  3. Step 3: Cross multiply
    3,405.12x = 5,107.68 × 1,065.14
  4. Step 4: Simplify right side
    3,405.12x = 5,440,368.74
  5. Step 5: Solve for x
    x = 5,440,368.74/3,405.12
  6. Step 6: Final answer
    x = 1,597.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.