Home / 3,140.09-4,707.70-1,291.67

Finding the Fourth Proportional to 3,140.09, 4,707.70 and 1,291.67

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Solution

The fourth proportional to 3,140.09, 4,707.70 and 1,291.67 is: 1,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.09 : 4,707.70 = 1,291.67 : x
  2. Step 2: Convert to fraction form
    3,140.09/4,707.70 = 1,291.67/x
  3. Step 3: Cross multiply
    3,140.09x = 4,707.70 × 1,291.67
  4. Step 4: Simplify right side
    3,140.09x = 6,080,794.86
  5. Step 5: Solve for x
    x = 6,080,794.86/3,140.09
  6. Step 6: Final answer
    x = 1,936.50

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1.5x scale

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.