Home / 2,380.08-3,284.60-1,385.40

Finding the Fourth Proportional to 2,380.08, 3,284.60 and 1,385.40

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Solution

The fourth proportional to 2,380.08, 3,284.60 and 1,385.40 is: 1,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.08 : 3,284.60 = 1,385.40 : x
  2. Step 2: Convert to fraction form
    2,380.08/3,284.60 = 1,385.40/x
  3. Step 3: Cross multiply
    2,380.08x = 3,284.60 × 1,385.40
  4. Step 4: Simplify right side
    2,380.08x = 4,550,484.84
  5. Step 5: Solve for x
    x = 4,550,484.84/2,380.08
  6. Step 6: Final answer
    x = 1,911.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.