Home / 2,087.58-3,127.70-1,861.58

Finding the Fourth Proportional to 2,087.58, 3,127.70 and 1,861.58

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Solution

The fourth proportional to 2,087.58, 3,127.70 and 1,861.58 is: 2,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.58 : 3,127.70 = 1,861.58 : x
  2. Step 2: Convert to fraction form
    2,087.58/3,127.70 = 1,861.58/x
  3. Step 3: Cross multiply
    2,087.58x = 3,127.70 × 1,861.58
  4. Step 4: Simplify right side
    2,087.58x = 5,822,463.77
  5. Step 5: Solve for x
    x = 5,822,463.77/2,087.58
  6. Step 6: Final answer
    x = 2,789.10

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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.