Home / 1,630.40-2,445.34-519.67

Finding the Fourth Proportional to 1,630.40, 2,445.34 and 519.67

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Solution

The fourth proportional to 1,630.40, 2,445.34 and 519.67 is: 779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.40 : 2,445.34 = 519.67 : x
  2. Step 2: Convert to fraction form
    1,630.40/2,445.34 = 519.67/x
  3. Step 3: Cross multiply
    1,630.40x = 2,445.34 × 519.67
  4. Step 4: Simplify right side
    1,630.40x = 1,270,769.84
  5. Step 5: Solve for x
    x = 1,270,769.84/1,630.40
  6. Step 6: Final answer
    x = 779.42

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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.