Home / 3,486.90-5,230.56-1,406.64

Finding the Fourth Proportional to 3,486.90, 5,230.56 and 1,406.64

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Solution

The fourth proportional to 3,486.90, 5,230.56 and 1,406.64 is: 2,110.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.90 : 5,230.56 = 1,406.64 : x
  2. Step 2: Convert to fraction form
    3,486.90/5,230.56 = 1,406.64/x
  3. Step 3: Cross multiply
    3,486.90x = 5,230.56 × 1,406.64
  4. Step 4: Simplify right side
    3,486.90x = 7,357,514.92
  5. Step 5: Solve for x
    x = 7,357,514.92/3,486.90
  6. Step 6: Final answer
    x = 2,110.04

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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.