Home / 1,406.08-2,107.78-528.35

Finding the Fourth Proportional to 1,406.08, 2,107.78 and 528.35

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Solution

The fourth proportional to 1,406.08, 2,107.78 and 528.35 is: 792.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406.08 : 2,107.78 = 528.35 : x
  2. Step 2: Convert to fraction form
    1,406.08/2,107.78 = 528.35/x
  3. Step 3: Cross multiply
    1,406.08x = 2,107.78 × 528.35
  4. Step 4: Simplify right side
    1,406.08x = 1,113,645.56
  5. Step 5: Solve for x
    x = 1,113,645.56/1,406.08
  6. Step 6: Final answer
    x = 792.02

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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.