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Finding the Fourth Proportional to 7,895.01, 10,899.06 and 4,911.81

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Solution

The fourth proportional to 7,895.01, 10,899.06 and 4,911.81 is: 6,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,895.01 : 10,899.06 = 4,911.81 : x
  2. Step 2: Convert to fraction form
    7,895.01/10,899.06 = 4,911.81/x
  3. Step 3: Cross multiply
    7,895.01x = 10,899.06 × 4,911.81
  4. Step 4: Simplify right side
    7,895.01x = 53,534,111.90
  5. Step 5: Solve for x
    x = 53,534,111.90/7,895.01
  6. Step 6: Final answer
    x = 6,780.75

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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.