Home / 2,015.32-2,781.15-1,316.70

Finding the Fourth Proportional to 2,015.32, 2,781.15 and 1,316.70

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Solution

The fourth proportional to 2,015.32, 2,781.15 and 1,316.70 is: 1,817.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.32 : 2,781.15 = 1,316.70 : x
  2. Step 2: Convert to fraction form
    2,015.32/2,781.15 = 1,316.70/x
  3. Step 3: Cross multiply
    2,015.32x = 2,781.15 × 1,316.70
  4. Step 4: Simplify right side
    2,015.32x = 3,661,940.21
  5. Step 5: Solve for x
    x = 3,661,940.21/2,015.32
  6. Step 6: Final answer
    x = 1,817.05

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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.