Home / 2,805.83-4,209.65-1,345.09

Finding the Fourth Proportional to 2,805.83, 4,209.65 and 1,345.09

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Solution

The fourth proportional to 2,805.83, 4,209.65 and 1,345.09 is: 2,018.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.83 : 4,209.65 = 1,345.09 : x
  2. Step 2: Convert to fraction form
    2,805.83/4,209.65 = 1,345.09/x
  3. Step 3: Cross multiply
    2,805.83x = 4,209.65 × 1,345.09
  4. Step 4: Simplify right side
    2,805.83x = 5,662,358.12
  5. Step 5: Solve for x
    x = 5,662,358.12/2,805.83
  6. Step 6: Final answer
    x = 2,018.07

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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.