Home / 3,813.20-5,718.35-1,313.67

Finding the Fourth Proportional to 3,813.20, 5,718.35 and 1,313.67

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Solution

The fourth proportional to 3,813.20, 5,718.35 and 1,313.67 is: 1,970.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.20 : 5,718.35 = 1,313.67 : x
  2. Step 2: Convert to fraction form
    3,813.20/5,718.35 = 1,313.67/x
  3. Step 3: Cross multiply
    3,813.20x = 5,718.35 × 1,313.67
  4. Step 4: Simplify right side
    3,813.20x = 7,512,010.02
  5. Step 5: Solve for x
    x = 7,512,010.02/3,813.20
  6. Step 6: Final answer
    x = 1,970.00

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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.