Home / 3,140.30-4,707.36-1,386.26

Finding the Fourth Proportional to 3,140.30, 4,707.36 and 1,386.26

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Solution

The fourth proportional to 3,140.30, 4,707.36 and 1,386.26 is: 2,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.30 : 4,707.36 = 1,386.26 : x
  2. Step 2: Convert to fraction form
    3,140.30/4,707.36 = 1,386.26/x
  3. Step 3: Cross multiply
    3,140.30x = 4,707.36 × 1,386.26
  4. Step 4: Simplify right side
    3,140.30x = 6,525,624.87
  5. Step 5: Solve for x
    x = 6,525,624.87/3,140.30
  6. Step 6: Final answer
    x = 2,078.03

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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.