Home / 9,709.20-13,400.10-6,177.60

Finding the Fourth Proportional to 9,709.20, 13,400.10 and 6,177.60

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Solution

The fourth proportional to 9,709.20, 13,400.10 and 6,177.60 is: 8,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.20 : 13,400.10 = 6,177.60 : x
  2. Step 2: Convert to fraction form
    9,709.20/13,400.10 = 6,177.60/x
  3. Step 3: Cross multiply
    9,709.20x = 13,400.10 × 6,177.60
  4. Step 4: Simplify right side
    9,709.20x = 82,780,457.76
  5. Step 5: Solve for x
    x = 82,780,457.76/9,709.20
  6. Step 6: Final answer
    x = 8,525.98

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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.