Home / 1,856.18-2,784.27-1,272.68

Finding the Fourth Proportional to 1,856.18, 2,784.27 and 1,272.68

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Solution

The fourth proportional to 1,856.18, 2,784.27 and 1,272.68 is: 1,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.18 : 2,784.27 = 1,272.68 : x
  2. Step 2: Convert to fraction form
    1,856.18/2,784.27 = 1,272.68/x
  3. Step 3: Cross multiply
    1,856.18x = 2,784.27 × 1,272.68
  4. Step 4: Simplify right side
    1,856.18x = 3,543,486.04
  5. Step 5: Solve for x
    x = 3,543,486.04/1,856.18
  6. Step 6: Final answer
    x = 1,909.02

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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.