Home / 7,912.21-10,915.55-4,554.22

Finding the Fourth Proportional to 7,912.21, 10,915.55 and 4,554.22

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Solution

The fourth proportional to 7,912.21, 10,915.55 and 4,554.22 is: 6,282.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.21 : 10,915.55 = 4,554.22 : x
  2. Step 2: Convert to fraction form
    7,912.21/10,915.55 = 4,554.22/x
  3. Step 3: Cross multiply
    7,912.21x = 10,915.55 × 4,554.22
  4. Step 4: Simplify right side
    7,912.21x = 49,711,783.14
  5. Step 5: Solve for x
    x = 49,711,783.14/7,912.21
  6. Step 6: Final answer
    x = 6,282.92

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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.