Home / 7,126.35-10,688.56-1,861.73

Finding the Fourth Proportional to 7,126.35, 10,688.56 and 1,861.73

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Solution

The fourth proportional to 7,126.35, 10,688.56 and 1,861.73 is: 2,792.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.35 : 10,688.56 = 1,861.73 : x
  2. Step 2: Convert to fraction form
    7,126.35/10,688.56 = 1,861.73/x
  3. Step 3: Cross multiply
    7,126.35x = 10,688.56 × 1,861.73
  4. Step 4: Simplify right side
    7,126.35x = 19,899,254.92
  5. Step 5: Solve for x
    x = 19,899,254.92/7,126.35
  6. Step 6: Final answer
    x = 2,792.35

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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.