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Finding the Fourth Proportional to 5,917.12, 8,859.88 and 5,216.47

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Solution

The fourth proportional to 5,917.12, 8,859.88 and 5,216.47 is: 7,810.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,917.12 : 8,859.88 = 5,216.47 : x
  2. Step 2: Convert to fraction form
    5,917.12/8,859.88 = 5,216.47/x
  3. Step 3: Cross multiply
    5,917.12x = 8,859.88 × 5,216.47
  4. Step 4: Simplify right side
    5,917.12x = 46,217,298.22
  5. Step 5: Solve for x
    x = 46,217,298.22/5,917.12
  6. Step 6: Final answer
    x = 7,810.78

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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.