Home / 3,378.78-5,070.59-1,189.35

Finding the Fourth Proportional to 3,378.78, 5,070.59 and 1,189.35

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Solution

The fourth proportional to 3,378.78, 5,070.59 and 1,189.35 is: 1,784.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.78 : 5,070.59 = 1,189.35 : x
  2. Step 2: Convert to fraction form
    3,378.78/5,070.59 = 1,189.35/x
  3. Step 3: Cross multiply
    3,378.78x = 5,070.59 × 1,189.35
  4. Step 4: Simplify right side
    3,378.78x = 6,030,706.22
  5. Step 5: Solve for x
    x = 6,030,706.22/3,378.78
  6. Step 6: Final answer
    x = 1,784.88

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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.