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Finding the Fourth Proportional to 7,891.16, 10,883.77 and 4,907.12

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Solution

The fourth proportional to 7,891.16, 10,883.77 and 4,907.12 is: 6,768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.16 : 10,883.77 = 4,907.12 : x
  2. Step 2: Convert to fraction form
    7,891.16/10,883.77 = 4,907.12/x
  3. Step 3: Cross multiply
    7,891.16x = 10,883.77 × 4,907.12
  4. Step 4: Simplify right side
    7,891.16x = 53,407,898.76
  5. Step 5: Solve for x
    x = 53,407,898.76/7,891.16
  6. Step 6: Final answer
    x = 6,768.07

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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.