Home / 4,895.19-7,342.79-2,120.45

Finding the Fourth Proportional to 4,895.19, 7,342.79 and 2,120.45

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Solution

The fourth proportional to 4,895.19, 7,342.79 and 2,120.45 is: 3,180.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,895.19 : 7,342.79 = 2,120.45 : x
  2. Step 2: Convert to fraction form
    4,895.19/7,342.79 = 2,120.45/x
  3. Step 3: Cross multiply
    4,895.19x = 7,342.79 × 2,120.45
  4. Step 4: Simplify right side
    4,895.19x = 15,569,971.74
  5. Step 5: Solve for x
    x = 15,569,971.74/4,895.19
  6. Step 6: Final answer
    x = 3,180.67

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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.