Home / 2,985.28-4,119.42-1,640.67

Finding the Fourth Proportional to 2,985.28, 4,119.42 and 1,640.67

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Solution

The fourth proportional to 2,985.28, 4,119.42 and 1,640.67 is: 2,263.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.28 : 4,119.42 = 1,640.67 : x
  2. Step 2: Convert to fraction form
    2,985.28/4,119.42 = 1,640.67/x
  3. Step 3: Cross multiply
    2,985.28x = 4,119.42 × 1,640.67
  4. Step 4: Simplify right side
    2,985.28x = 6,758,608.81
  5. Step 5: Solve for x
    x = 6,758,608.81/2,985.28
  6. Step 6: Final answer
    x = 2,263.98

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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.