Home / 8,992.16-12,396.32-6,331.28

Finding the Fourth Proportional to 8,992.16, 12,396.32 and 6,331.28

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Solution

The fourth proportional to 8,992.16, 12,396.32 and 6,331.28 is: 8,728.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.16 : 12,396.32 = 6,331.28 : x
  2. Step 2: Convert to fraction form
    8,992.16/12,396.32 = 6,331.28/x
  3. Step 3: Cross multiply
    8,992.16x = 12,396.32 × 6,331.28
  4. Step 4: Simplify right side
    8,992.16x = 78,484,572.89
  5. Step 5: Solve for x
    x = 78,484,572.89/8,992.16
  6. Step 6: Final answer
    x = 8,728.11

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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.