Home / 7,907.50-10,912.53-5,117.86

Finding the Fourth Proportional to 7,907.50, 10,912.53 and 5,117.86

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Solution

The fourth proportional to 7,907.50, 10,912.53 and 5,117.86 is: 7,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.50 : 10,912.53 = 5,117.86 : x
  2. Step 2: Convert to fraction form
    7,907.50/10,912.53 = 5,117.86/x
  3. Step 3: Cross multiply
    7,907.50x = 10,912.53 × 5,117.86
  4. Step 4: Simplify right side
    7,907.50x = 55,848,800.79
  5. Step 5: Solve for x
    x = 55,848,800.79/7,907.50
  6. Step 6: Final answer
    x = 7,062.76

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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.