Home / 3,941.99-5,913.30-1,309.40

Finding the Fourth Proportional to 3,941.99, 5,913.30 and 1,309.40

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Solution

The fourth proportional to 3,941.99, 5,913.30 and 1,309.40 is: 1,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.99 : 5,913.30 = 1,309.40 : x
  2. Step 2: Convert to fraction form
    3,941.99/5,913.30 = 1,309.40/x
  3. Step 3: Cross multiply
    3,941.99x = 5,913.30 × 1,309.40
  4. Step 4: Simplify right side
    3,941.99x = 7,742,845.45
  5. Step 5: Solve for x
    x = 7,742,845.45/3,941.99
  6. Step 6: Final answer
    x = 1,964.20

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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.