Home / 7,915.56-10,922.71-4,378.69

Finding the Fourth Proportional to 7,915.56, 10,922.71 and 4,378.69

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Solution

The fourth proportional to 7,915.56, 10,922.71 and 4,378.69 is: 6,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.56 : 10,922.71 = 4,378.69 : x
  2. Step 2: Convert to fraction form
    7,915.56/10,922.71 = 4,378.69/x
  3. Step 3: Cross multiply
    7,915.56x = 10,922.71 × 4,378.69
  4. Step 4: Simplify right side
    7,915.56x = 47,827,161.05
  5. Step 5: Solve for x
    x = 47,827,161.05/7,915.56
  6. Step 6: Final answer
    x = 6,042.17

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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.