Home / 2,015.07-2,780.79-1,316.43

Finding the Fourth Proportional to 2,015.07, 2,780.79 and 1,316.43

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Solution

The fourth proportional to 2,015.07, 2,780.79 and 1,316.43 is: 1,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.07 : 2,780.79 = 1,316.43 : x
  2. Step 2: Convert to fraction form
    2,015.07/2,780.79 = 1,316.43/x
  3. Step 3: Cross multiply
    2,015.07x = 2,780.79 × 1,316.43
  4. Step 4: Simplify right side
    2,015.07x = 3,660,715.38
  5. Step 5: Solve for x
    x = 3,660,715.38/2,015.07
  6. Step 6: Final answer
    x = 1,816.67

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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.