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Finding the Fourth Proportional to 7,879.07, 11,807.47 and 4,370.63

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Solution

The fourth proportional to 7,879.07, 11,807.47 and 4,370.63 is: 6,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.07 : 11,807.47 = 4,370.63 : x
  2. Step 2: Convert to fraction form
    7,879.07/11,807.47 = 4,370.63/x
  3. Step 3: Cross multiply
    7,879.07x = 11,807.47 × 4,370.63
  4. Step 4: Simplify right side
    7,879.07x = 51,606,001.72
  5. Step 5: Solve for x
    x = 51,606,001.72/7,879.07
  6. Step 6: Final answer
    x = 6,549.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.