Home / 1,856.70-2,784.87-1,126.08

Finding the Fourth Proportional to 1,856.70, 2,784.87 and 1,126.08

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Solution

The fourth proportional to 1,856.70, 2,784.87 and 1,126.08 is: 1,689.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.70 : 2,784.87 = 1,126.08 : x
  2. Step 2: Convert to fraction form
    1,856.70/2,784.87 = 1,126.08/x
  3. Step 3: Cross multiply
    1,856.70x = 2,784.87 × 1,126.08
  4. Step 4: Simplify right side
    1,856.70x = 3,135,986.41
  5. Step 5: Solve for x
    x = 3,135,986.41/1,856.70
  6. Step 6: Final answer
    x = 1,689.01

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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.