Home / 7,680.72-11,531.88-7,549.32

Finding the Fourth Proportional to 7,680.72, 11,531.88 and 7,549.32

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Solution

The fourth proportional to 7,680.72, 11,531.88 and 7,549.32 is: 11,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.72 : 11,531.88 = 7,549.32 : x
  2. Step 2: Convert to fraction form
    7,680.72/11,531.88 = 7,549.32/x
  3. Step 3: Cross multiply
    7,680.72x = 11,531.88 × 7,549.32
  4. Step 4: Simplify right side
    7,680.72x = 87,057,852.32
  5. Step 5: Solve for x
    x = 87,057,852.32/7,680.72
  6. Step 6: Final answer
    x = 11,334.60

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1.5x scale

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.