Home / 4,391.20-6,586.80-1,313.20

Finding the Fourth Proportional to 4,391.20, 6,586.80 and 1,313.20

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Solution

The fourth proportional to 4,391.20, 6,586.80 and 1,313.20 is: 1,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,391.20 : 6,586.80 = 1,313.20 : x
  2. Step 2: Convert to fraction form
    4,391.20/6,586.80 = 1,313.20/x
  3. Step 3: Cross multiply
    4,391.20x = 6,586.80 × 1,313.20
  4. Step 4: Simplify right side
    4,391.20x = 8,649,785.76
  5. Step 5: Solve for x
    x = 8,649,785.76/4,391.20
  6. Step 6: Final answer
    x = 1,969.80

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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.