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Finding the Fourth Proportional to 8,466.80, 12,675.24 and 6,285.20

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Solution

The fourth proportional to 8,466.80, 12,675.24 and 6,285.20 is: 9,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.80 : 12,675.24 = 6,285.20 : x
  2. Step 2: Convert to fraction form
    8,466.80/12,675.24 = 6,285.20/x
  3. Step 3: Cross multiply
    8,466.80x = 12,675.24 × 6,285.20
  4. Step 4: Simplify right side
    8,466.80x = 79,666,418.45
  5. Step 5: Solve for x
    x = 79,666,418.45/8,466.80
  6. Step 6: Final answer
    x = 9,409.27

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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.