Home / 2,830.48-3,904.99-2,086.22

Finding the Fourth Proportional to 2,830.48, 3,904.99 and 2,086.22

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Solution

The fourth proportional to 2,830.48, 3,904.99 and 2,086.22 is: 2,878.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.48 : 3,904.99 = 2,086.22 : x
  2. Step 2: Convert to fraction form
    2,830.48/3,904.99 = 2,086.22/x
  3. Step 3: Cross multiply
    2,830.48x = 3,904.99 × 2,086.22
  4. Step 4: Simplify right side
    2,830.48x = 8,146,643.50
  5. Step 5: Solve for x
    x = 8,146,643.50/2,830.48
  6. Step 6: Final answer
    x = 2,878.19

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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.