Home / 2,805.60-4,206.34-1,345.78

Finding the Fourth Proportional to 2,805.60, 4,206.34 and 1,345.78

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Solution

The fourth proportional to 2,805.60, 4,206.34 and 1,345.78 is: 2,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.60 : 4,206.34 = 1,345.78 : x
  2. Step 2: Convert to fraction form
    2,805.60/4,206.34 = 1,345.78/x
  3. Step 3: Cross multiply
    2,805.60x = 4,206.34 × 1,345.78
  4. Step 4: Simplify right side
    2,805.60x = 5,660,808.25
  5. Step 5: Solve for x
    x = 5,660,808.25/2,805.60
  6. Step 6: Final answer
    x = 2,017.68

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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.