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Finding the Fourth Proportional to 7,077.88, 10,607.70 and 2,912.88

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Solution

The fourth proportional to 7,077.88, 10,607.70 and 2,912.88 is: 4,365.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.88 : 10,607.70 = 2,912.88 : x
  2. Step 2: Convert to fraction form
    7,077.88/10,607.70 = 2,912.88/x
  3. Step 3: Cross multiply
    7,077.88x = 10,607.70 × 2,912.88
  4. Step 4: Simplify right side
    7,077.88x = 30,898,957.18
  5. Step 5: Solve for x
    x = 30,898,957.18/7,077.88
  6. Step 6: Final answer
    x = 4,365.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.