Home / 8,905.72-12,289.52-4,872.52

Finding the Fourth Proportional to 8,905.72, 12,289.52 and 4,872.52

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Solution

The fourth proportional to 8,905.72, 12,289.52 and 4,872.52 is: 6,723.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.72 : 12,289.52 = 4,872.52 : x
  2. Step 2: Convert to fraction form
    8,905.72/12,289.52 = 4,872.52/x
  3. Step 3: Cross multiply
    8,905.72x = 12,289.52 × 4,872.52
  4. Step 4: Simplify right side
    8,905.72x = 59,880,950.53
  5. Step 5: Solve for x
    x = 59,880,950.53/8,905.72
  6. Step 6: Final answer
    x = 6,723.88

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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.