Home / 2,775.08-3,828.51-1,780.20

Finding the Fourth Proportional to 2,775.08, 3,828.51 and 1,780.20

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Solution

The fourth proportional to 2,775.08, 3,828.51 and 1,780.20 is: 2,455.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.08 : 3,828.51 = 1,780.20 : x
  2. Step 2: Convert to fraction form
    2,775.08/3,828.51 = 1,780.20/x
  3. Step 3: Cross multiply
    2,775.08x = 3,828.51 × 1,780.20
  4. Step 4: Simplify right side
    2,775.08x = 6,815,513.50
  5. Step 5: Solve for x
    x = 6,815,513.50/2,775.08
  6. Step 6: Final answer
    x = 2,455.97

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1.5x scale

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.