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Finding the Fourth Proportional to 5,383.90, 8,075.20 and 1,435.46

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Solution

The fourth proportional to 5,383.90, 8,075.20 and 1,435.46 is: 2,153.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,383.90 : 8,075.20 = 1,435.46 : x
  2. Step 2: Convert to fraction form
    5,383.90/8,075.20 = 1,435.46/x
  3. Step 3: Cross multiply
    5,383.90x = 8,075.20 × 1,435.46
  4. Step 4: Simplify right side
    5,383.90x = 11,591,626.59
  5. Step 5: Solve for x
    x = 11,591,626.59/5,383.90
  6. Step 6: Final answer
    x = 2,153.02

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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.