Home / 5,435.20-8,152.80-3,491.20

Finding the Fourth Proportional to 5,435.20, 8,152.80 and 3,491.20

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Solution

The fourth proportional to 5,435.20, 8,152.80 and 3,491.20 is: 5,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,435.20 : 8,152.80 = 3,491.20 : x
  2. Step 2: Convert to fraction form
    5,435.20/8,152.80 = 3,491.20/x
  3. Step 3: Cross multiply
    5,435.20x = 8,152.80 × 3,491.20
  4. Step 4: Simplify right side
    5,435.20x = 28,463,055.36
  5. Step 5: Solve for x
    x = 28,463,055.36/5,435.20
  6. Step 6: Final answer
    x = 5,236.80

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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.