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Finding the Fourth Proportional to 7,872.32, 10,868.32 and 5,223.32

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Solution

The fourth proportional to 7,872.32, 10,868.32 and 5,223.32 is: 7,211.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.32 : 10,868.32 = 5,223.32 : x
  2. Step 2: Convert to fraction form
    7,872.32/10,868.32 = 5,223.32/x
  3. Step 3: Cross multiply
    7,872.32x = 10,868.32 × 5,223.32
  4. Step 4: Simplify right side
    7,872.32x = 56,768,713.22
  5. Step 5: Solve for x
    x = 56,768,713.22/7,872.32
  6. Step 6: Final answer
    x = 7,211.18

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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.