Home / 7,915.32-10,922.88-4,378.56

Finding the Fourth Proportional to 7,915.32, 10,922.88 and 4,378.56

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Solution

The fourth proportional to 7,915.32, 10,922.88 and 4,378.56 is: 6,042.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.32 : 10,922.88 = 4,378.56 : x
  2. Step 2: Convert to fraction form
    7,915.32/10,922.88 = 4,378.56/x
  3. Step 3: Cross multiply
    7,915.32x = 10,922.88 × 4,378.56
  4. Step 4: Simplify right side
    7,915.32x = 47,826,485.45
  5. Step 5: Solve for x
    x = 47,826,485.45/7,915.32
  6. Step 6: Final answer
    x = 6,042.27

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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.