Home / 5,440.75-8,120.02-4,915.87

Finding the Fourth Proportional to 5,440.75, 8,120.02 and 4,915.87

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Solution

The fourth proportional to 5,440.75, 8,120.02 and 4,915.87 is: 7,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440.75 : 8,120.02 = 4,915.87 : x
  2. Step 2: Convert to fraction form
    5,440.75/8,120.02 = 4,915.87/x
  3. Step 3: Cross multiply
    5,440.75x = 8,120.02 × 4,915.87
  4. Step 4: Simplify right side
    5,440.75x = 39,916,962.72
  5. Step 5: Solve for x
    x = 39,916,962.72/5,440.75
  6. Step 6: Final answer
    x = 7,336.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.