Home / 2,999.32-4,139.56-2,215.64

Finding the Fourth Proportional to 2,999.32, 4,139.56 and 2,215.64

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Solution

The fourth proportional to 2,999.32, 4,139.56 and 2,215.64 is: 3,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.32 : 4,139.56 = 2,215.64 : x
  2. Step 2: Convert to fraction form
    2,999.32/4,139.56 = 2,215.64/x
  3. Step 3: Cross multiply
    2,999.32x = 4,139.56 × 2,215.64
  4. Step 4: Simplify right side
    2,999.32x = 9,171,774.72
  5. Step 5: Solve for x
    x = 9,171,774.72/2,999.32
  6. Step 6: Final answer
    x = 3,057.95

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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.