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Finding the Fourth Proportional to 8,450.80, 11,661.78 and 4,866.40

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Solution

The fourth proportional to 8,450.80, 11,661.78 and 4,866.40 is: 6,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,450.80 : 11,661.78 = 4,866.40 : x
  2. Step 2: Convert to fraction form
    8,450.80/11,661.78 = 4,866.40/x
  3. Step 3: Cross multiply
    8,450.80x = 11,661.78 × 4,866.40
  4. Step 4: Simplify right side
    8,450.80x = 56,750,886.19
  5. Step 5: Solve for x
    x = 56,750,886.19/8,450.80
  6. Step 6: Final answer
    x = 6,715.45

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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.