Home / 2,095.20-3,138.48-1,322.40

Finding the Fourth Proportional to 2,095.20, 3,138.48 and 1,322.40

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Solution

The fourth proportional to 2,095.20, 3,138.48 and 1,322.40 is: 1,980.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,095.20 : 3,138.48 = 1,322.40 : x
  2. Step 2: Convert to fraction form
    2,095.20/3,138.48 = 1,322.40/x
  3. Step 3: Cross multiply
    2,095.20x = 3,138.48 × 1,322.40
  4. Step 4: Simplify right side
    2,095.20x = 4,150,325.95
  5. Step 5: Solve for x
    x = 4,150,325.95/2,095.20
  6. Step 6: Final answer
    x = 1,980.87

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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.