Home / 5,410.02-8,111.90-2,121.32

Finding the Fourth Proportional to 5,410.02, 8,111.90 and 2,121.32

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Solution

The fourth proportional to 5,410.02, 8,111.90 and 2,121.32 is: 3,180.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.02 : 8,111.90 = 2,121.32 : x
  2. Step 2: Convert to fraction form
    5,410.02/8,111.90 = 2,121.32/x
  3. Step 3: Cross multiply
    5,410.02x = 8,111.90 × 2,121.32
  4. Step 4: Simplify right side
    5,410.02x = 17,207,935.71
  5. Step 5: Solve for x
    x = 17,207,935.71/5,410.02
  6. Step 6: Final answer
    x = 3,180.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.