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Finding the Fourth Proportional to 8,858.81, 12,225.16 and 4,879.91

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Solution

The fourth proportional to 8,858.81, 12,225.16 and 4,879.91 is: 6,734.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.81 : 12,225.16 = 4,879.91 : x
  2. Step 2: Convert to fraction form
    8,858.81/12,225.16 = 4,879.91/x
  3. Step 3: Cross multiply
    8,858.81x = 12,225.16 × 4,879.91
  4. Step 4: Simplify right side
    8,858.81x = 59,657,717.20
  5. Step 5: Solve for x
    x = 59,657,717.20/8,858.81
  6. Step 6: Final answer
    x = 6,734.28

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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.