Home / 1,869.70-2,804.55-1,216.90

Finding the Fourth Proportional to 1,869.70, 2,804.55 and 1,216.90

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Solution

The fourth proportional to 1,869.70, 2,804.55 and 1,216.90 is: 1,825.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.70 : 2,804.55 = 1,216.90 : x
  2. Step 2: Convert to fraction form
    1,869.70/2,804.55 = 1,216.90/x
  3. Step 3: Cross multiply
    1,869.70x = 2,804.55 × 1,216.90
  4. Step 4: Simplify right side
    1,869.70x = 3,412,856.90
  5. Step 5: Solve for x
    x = 3,412,856.90/1,869.70
  6. Step 6: Final answer
    x = 1,825.35

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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.