Home / 7,915.15-10,912.21-5,077.59

Finding the Fourth Proportional to 7,915.15, 10,912.21 and 5,077.59

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Solution

The fourth proportional to 7,915.15, 10,912.21 and 5,077.59 is: 7,000.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.15 : 10,912.21 = 5,077.59 : x
  2. Step 2: Convert to fraction form
    7,915.15/10,912.21 = 5,077.59/x
  3. Step 3: Cross multiply
    7,915.15x = 10,912.21 × 5,077.59
  4. Step 4: Simplify right side
    7,915.15x = 55,407,715.68
  5. Step 5: Solve for x
    x = 55,407,715.68/7,915.15
  6. Step 6: Final answer
    x = 7,000.21

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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.