Home / 8,989.16-13,485.11-3,145.32

Finding the Fourth Proportional to 8,989.16, 13,485.11 and 3,145.32

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Solution

The fourth proportional to 8,989.16, 13,485.11 and 3,145.32 is: 4,718.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.16 : 13,485.11 = 3,145.32 : x
  2. Step 2: Convert to fraction form
    8,989.16/13,485.11 = 3,145.32/x
  3. Step 3: Cross multiply
    8,989.16x = 13,485.11 × 3,145.32
  4. Step 4: Simplify right side
    8,989.16x = 42,414,970.46
  5. Step 5: Solve for x
    x = 42,414,970.46/8,989.16
  6. Step 6: Final answer
    x = 4,718.46

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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.