Home / 6,118.40-8,440.50-4,129.60

Finding the Fourth Proportional to 6,118.40, 8,440.50 and 4,129.60

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Solution

The fourth proportional to 6,118.40, 8,440.50 and 4,129.60 is: 5,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,118.40 : 8,440.50 = 4,129.60 : x
  2. Step 2: Convert to fraction form
    6,118.40/8,440.50 = 4,129.60/x
  3. Step 3: Cross multiply
    6,118.40x = 8,440.50 × 4,129.60
  4. Step 4: Simplify right side
    6,118.40x = 34,855,888.80
  5. Step 5: Solve for x
    x = 34,855,888.80/6,118.40
  6. Step 6: Final answer
    x = 5,696.90

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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.