Home / 8,453.12-12,679.64-4,707.20

Finding the Fourth Proportional to 8,453.12, 12,679.64 and 4,707.20

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Solution

The fourth proportional to 8,453.12, 12,679.64 and 4,707.20 is: 7,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.12 : 12,679.64 = 4,707.20 : x
  2. Step 2: Convert to fraction form
    8,453.12/12,679.64 = 4,707.20/x
  3. Step 3: Cross multiply
    8,453.12x = 12,679.64 × 4,707.20
  4. Step 4: Simplify right side
    8,453.12x = 59,685,601.41
  5. Step 5: Solve for x
    x = 59,685,601.41/8,453.12
  6. Step 6: Final answer
    x = 7,060.78

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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.