Home / 7,786.90-10,749.84-4,957.12

Finding the Fourth Proportional to 7,786.90, 10,749.84 and 4,957.12

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Solution

The fourth proportional to 7,786.90, 10,749.84 and 4,957.12 is: 6,843.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,786.90 : 10,749.84 = 4,957.12 : x
  2. Step 2: Convert to fraction form
    7,786.90/10,749.84 = 4,957.12/x
  3. Step 3: Cross multiply
    7,786.90x = 10,749.84 × 4,957.12
  4. Step 4: Simplify right side
    7,786.90x = 53,288,246.86
  5. Step 5: Solve for x
    x = 53,288,246.86/7,786.90
  6. Step 6: Final answer
    x = 6,843.32

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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.