Home / 7,869.46-10,861.70-4,512.21

Finding the Fourth Proportional to 7,869.46, 10,861.70 and 4,512.21

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Solution

The fourth proportional to 7,869.46, 10,861.70 and 4,512.21 is: 6,227.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.46 : 10,861.70 = 4,512.21 : x
  2. Step 2: Convert to fraction form
    7,869.46/10,861.70 = 4,512.21/x
  3. Step 3: Cross multiply
    7,869.46x = 10,861.70 × 4,512.21
  4. Step 4: Simplify right side
    7,869.46x = 49,010,271.36
  5. Step 5: Solve for x
    x = 49,010,271.36/7,869.46
  6. Step 6: Final answer
    x = 6,227.91

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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.