Home / 7,912.86-10,918.35-4,889.67

Finding the Fourth Proportional to 7,912.86, 10,918.35 and 4,889.67

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Solution

The fourth proportional to 7,912.86, 10,918.35 and 4,889.67 is: 6,746.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.86 : 10,918.35 = 4,889.67 : x
  2. Step 2: Convert to fraction form
    7,912.86/10,918.35 = 4,889.67/x
  3. Step 3: Cross multiply
    7,912.86x = 10,918.35 × 4,889.67
  4. Step 4: Simplify right side
    7,912.86x = 53,387,128.44
  5. Step 5: Solve for x
    x = 53,387,128.44/7,912.86
  6. Step 6: Final answer
    x = 6,746.88

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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.