Home / 4,919.40-7,378.92-1,409.76

Finding the Fourth Proportional to 4,919.40, 7,378.92 and 1,409.76

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Solution

The fourth proportional to 4,919.40, 7,378.92 and 1,409.76 is: 2,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.40 : 7,378.92 = 1,409.76 : x
  2. Step 2: Convert to fraction form
    4,919.40/7,378.92 = 1,409.76/x
  3. Step 3: Cross multiply
    4,919.40x = 7,378.92 × 1,409.76
  4. Step 4: Simplify right side
    4,919.40x = 10,402,506.26
  5. Step 5: Solve for x
    x = 10,402,506.26/4,919.40
  6. Step 6: Final answer
    x = 2,114.59

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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.