Home / 7,106.06-9,806.18-4,121.70

Finding the Fourth Proportional to 7,106.06, 9,806.18 and 4,121.70

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Solution

The fourth proportional to 7,106.06, 9,806.18 and 4,121.70 is: 5,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.06 : 9,806.18 = 4,121.70 : x
  2. Step 2: Convert to fraction form
    7,106.06/9,806.18 = 4,121.70/x
  3. Step 3: Cross multiply
    7,106.06x = 9,806.18 × 4,121.70
  4. Step 4: Simplify right side
    7,106.06x = 40,418,111.50
  5. Step 5: Solve for x
    x = 40,418,111.50/7,106.06
  6. Step 6: Final answer
    x = 5,687.84

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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.