Home / 5,383.91-8,075.86-1,686.42

Finding the Fourth Proportional to 5,383.91, 8,075.86 and 1,686.42

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Solution

The fourth proportional to 5,383.91, 8,075.86 and 1,686.42 is: 2,529.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,383.91 : 8,075.86 = 1,686.42 : x
  2. Step 2: Convert to fraction form
    5,383.91/8,075.86 = 1,686.42/x
  3. Step 3: Cross multiply
    5,383.91x = 8,075.86 × 1,686.42
  4. Step 4: Simplify right side
    5,383.91x = 13,619,313.67
  5. Step 5: Solve for x
    x = 13,619,313.67/5,383.91
  6. Step 6: Final answer
    x = 2,529.63

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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.