Home / 7,312.75-10,091.60-4,000.75

Finding the Fourth Proportional to 7,312.75, 10,091.60 and 4,000.75

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Solution

The fourth proportional to 7,312.75, 10,091.60 and 4,000.75 is: 5,521.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,312.75 : 10,091.60 = 4,000.75 : x
  2. Step 2: Convert to fraction form
    7,312.75/10,091.60 = 4,000.75/x
  3. Step 3: Cross multiply
    7,312.75x = 10,091.60 × 4,000.75
  4. Step 4: Simplify right side
    7,312.75x = 40,373,968.70
  5. Step 5: Solve for x
    x = 40,373,968.70/7,312.75
  6. Step 6: Final answer
    x = 5,521.04

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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.