Home / 3,345.12-5,017.68-1,809.12

Finding the Fourth Proportional to 3,345.12, 5,017.68 and 1,809.12

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Solution

The fourth proportional to 3,345.12, 5,017.68 and 1,809.12 is: 2,713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,345.12 : 5,017.68 = 1,809.12 : x
  2. Step 2: Convert to fraction form
    3,345.12/5,017.68 = 1,809.12/x
  3. Step 3: Cross multiply
    3,345.12x = 5,017.68 × 1,809.12
  4. Step 4: Simplify right side
    3,345.12x = 9,077,585.24
  5. Step 5: Solve for x
    x = 9,077,585.24/3,345.12
  6. Step 6: Final answer
    x = 2,713.68

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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.