Home / 2,080.70-2,870.87-1,294.32

Finding the Fourth Proportional to 2,080.70, 2,870.87 and 1,294.32

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Solution

The fourth proportional to 2,080.70, 2,870.87 and 1,294.32 is: 1,785.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.70 : 2,870.87 = 1,294.32 : x
  2. Step 2: Convert to fraction form
    2,080.70/2,870.87 = 1,294.32/x
  3. Step 3: Cross multiply
    2,080.70x = 2,870.87 × 1,294.32
  4. Step 4: Simplify right side
    2,080.70x = 3,715,817.99
  5. Step 5: Solve for x
    x = 3,715,817.99/2,080.70
  6. Step 6: Final answer
    x = 1,785.85

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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.