Home / 2,878.10-3,971.41-1,619.00

Finding the Fourth Proportional to 2,878.10, 3,971.41 and 1,619.00

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Solution

The fourth proportional to 2,878.10, 3,971.41 and 1,619.00 is: 2,234.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.10 : 3,971.41 = 1,619.00 : x
  2. Step 2: Convert to fraction form
    2,878.10/3,971.41 = 1,619.00/x
  3. Step 3: Cross multiply
    2,878.10x = 3,971.41 × 1,619.00
  4. Step 4: Simplify right side
    2,878.10x = 6,429,718.67
  5. Step 5: Solve for x
    x = 6,429,718.67/2,878.10
  6. Step 6: Final answer
    x = 2,234.01

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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.