Home / 2,085.84-2,878.55-1,201.64

Finding the Fourth Proportional to 2,085.84, 2,878.55 and 1,201.64

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Solution

The fourth proportional to 2,085.84, 2,878.55 and 1,201.64 is: 1,658.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.84 : 2,878.55 = 1,201.64 : x
  2. Step 2: Convert to fraction form
    2,085.84/2,878.55 = 1,201.64/x
  3. Step 3: Cross multiply
    2,085.84x = 2,878.55 × 1,201.64
  4. Step 4: Simplify right side
    2,085.84x = 3,458,960.42
  5. Step 5: Solve for x
    x = 3,458,960.42/2,085.84
  6. Step 6: Final answer
    x = 1,658.31

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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.