Home / 3,186.90-4,780.35-1,626.30

Finding the Fourth Proportional to 3,186.90, 4,780.35 and 1,626.30

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Solution

The fourth proportional to 3,186.90, 4,780.35 and 1,626.30 is: 2,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.90 : 4,780.35 = 1,626.30 : x
  2. Step 2: Convert to fraction form
    3,186.90/4,780.35 = 1,626.30/x
  3. Step 3: Cross multiply
    3,186.90x = 4,780.35 × 1,626.30
  4. Step 4: Simplify right side
    3,186.90x = 7,774,283.21
  5. Step 5: Solve for x
    x = 7,774,283.21/3,186.90
  6. Step 6: Final answer
    x = 2,439.45

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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.