Home / 3,999.21-5,521.63-2,586.32

Finding the Fourth Proportional to 3,999.21, 5,521.63 and 2,586.32

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Solution

The fourth proportional to 3,999.21, 5,521.63 and 2,586.32 is: 3,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.21 : 5,521.63 = 2,586.32 : x
  2. Step 2: Convert to fraction form
    3,999.21/5,521.63 = 2,586.32/x
  3. Step 3: Cross multiply
    3,999.21x = 5,521.63 × 2,586.32
  4. Step 4: Simplify right side
    3,999.21x = 14,280,702.10
  5. Step 5: Solve for x
    x = 14,280,702.10/3,999.21
  6. Step 6: Final answer
    x = 3,570.88

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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.