Home / 5,123.45-7,670.21-3,895.67

Finding the Fourth Proportional to 5,123.45, 7,670.21 and 3,895.67

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Solution

The fourth proportional to 5,123.45, 7,670.21 and 3,895.67 is: 5,832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.45 : 7,670.21 = 3,895.67 : x
  2. Step 2: Convert to fraction form
    5,123.45/7,670.21 = 3,895.67/x
  3. Step 3: Cross multiply
    5,123.45x = 7,670.21 × 3,895.67
  4. Step 4: Simplify right side
    5,123.45x = 29,880,549.16
  5. Step 5: Solve for x
    x = 29,880,549.16/5,123.45
  6. Step 6: Final answer
    x = 5,832.12

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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.