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Finding the Fourth Proportional to 5,315.91, 7,334.59 and 2,957.60

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Solution

The fourth proportional to 5,315.91, 7,334.59 and 2,957.60 is: 4,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.91 : 7,334.59 = 2,957.60 : x
  2. Step 2: Convert to fraction form
    5,315.91/7,334.59 = 2,957.60/x
  3. Step 3: Cross multiply
    5,315.91x = 7,334.59 × 2,957.60
  4. Step 4: Simplify right side
    5,315.91x = 21,692,783.38
  5. Step 5: Solve for x
    x = 21,692,783.38/5,315.91
  6. Step 6: Final answer
    x = 4,080.73

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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.