Home / 8,905.52-12,285.44-5,762.72

Finding the Fourth Proportional to 8,905.52, 12,285.44 and 5,762.72

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Solution

The fourth proportional to 8,905.52, 12,285.44 and 5,762.72 is: 7,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.52 : 12,285.44 = 5,762.72 : x
  2. Step 2: Convert to fraction form
    8,905.52/12,285.44 = 5,762.72/x
  3. Step 3: Cross multiply
    8,905.52x = 12,285.44 × 5,762.72
  4. Step 4: Simplify right side
    8,905.52x = 70,797,550.80
  5. Step 5: Solve for x
    x = 70,797,550.80/8,905.52
  6. Step 6: Final answer
    x = 7,949.85

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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.