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Finding the Fourth Proportional to 5,071.76, 6,999.88 and 2,975.90

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Solution

The fourth proportional to 5,071.76, 6,999.88 and 2,975.90 is: 4,107.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,071.76 : 6,999.88 = 2,975.90 : x
  2. Step 2: Convert to fraction form
    5,071.76/6,999.88 = 2,975.90/x
  3. Step 3: Cross multiply
    5,071.76x = 6,999.88 × 2,975.90
  4. Step 4: Simplify right side
    5,071.76x = 20,830,942.89
  5. Step 5: Solve for x
    x = 20,830,942.89/5,071.76
  6. Step 6: Final answer
    x = 4,107.24

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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.