Home / 3,412.12-5,117.10-1,219.60

Finding the Fourth Proportional to 3,412.12, 5,117.10 and 1,219.60

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Solution

The fourth proportional to 3,412.12, 5,117.10 and 1,219.60 is: 1,829.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.12 : 5,117.10 = 1,219.60 : x
  2. Step 2: Convert to fraction form
    3,412.12/5,117.10 = 1,219.60/x
  3. Step 3: Cross multiply
    3,412.12x = 5,117.10 × 1,219.60
  4. Step 4: Simplify right side
    3,412.12x = 6,240,815.16
  5. Step 5: Solve for x
    x = 6,240,815.16/3,412.12
  6. Step 6: Final answer
    x = 1,829.01

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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.