Home / 7,640.72-10,550.45-4,812.65

Finding the Fourth Proportional to 7,640.72, 10,550.45 and 4,812.65

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Solution

The fourth proportional to 7,640.72, 10,550.45 and 4,812.65 is: 6,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.72 : 10,550.45 = 4,812.65 : x
  2. Step 2: Convert to fraction form
    7,640.72/10,550.45 = 4,812.65/x
  3. Step 3: Cross multiply
    7,640.72x = 10,550.45 × 4,812.65
  4. Step 4: Simplify right side
    7,640.72x = 50,775,582.47
  5. Step 5: Solve for x
    x = 50,775,582.47/7,640.72
  6. Step 6: Final answer
    x = 6,645.40

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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.