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Finding the Fourth Proportional to 8,782.83, 12,121.49 and 4,955.25

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Solution

The fourth proportional to 8,782.83, 12,121.49 and 4,955.25 is: 6,838.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.83 : 12,121.49 = 4,955.25 : x
  2. Step 2: Convert to fraction form
    8,782.83/12,121.49 = 4,955.25/x
  3. Step 3: Cross multiply
    8,782.83x = 12,121.49 × 4,955.25
  4. Step 4: Simplify right side
    8,782.83x = 60,064,988.55
  5. Step 5: Solve for x
    x = 60,064,988.55/8,782.83
  6. Step 6: Final answer
    x = 6,838.91

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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.