Home / 7,143.40-10,718.30-3,245.80

Finding the Fourth Proportional to 7,143.40, 10,718.30 and 3,245.80

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Solution

The fourth proportional to 7,143.40, 10,718.30 and 3,245.80 is: 4,870.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.40 : 10,718.30 = 3,245.80 : x
  2. Step 2: Convert to fraction form
    7,143.40/10,718.30 = 3,245.80/x
  3. Step 3: Cross multiply
    7,143.40x = 10,718.30 × 3,245.80
  4. Step 4: Simplify right side
    7,143.40x = 34,789,458.14
  5. Step 5: Solve for x
    x = 34,789,458.14/7,143.40
  6. Step 6: Final answer
    x = 4,870.15

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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.