Home / 1,856.15-2,785.35-1,077.68

Finding the Fourth Proportional to 1,856.15, 2,785.35 and 1,077.68

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Solution

The fourth proportional to 1,856.15, 2,785.35 and 1,077.68 is: 1,617.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.15 : 2,785.35 = 1,077.68 : x
  2. Step 2: Convert to fraction form
    1,856.15/2,785.35 = 1,077.68/x
  3. Step 3: Cross multiply
    1,856.15x = 2,785.35 × 1,077.68
  4. Step 4: Simplify right side
    1,856.15x = 3,001,702.06
  5. Step 5: Solve for x
    x = 3,001,702.06/1,856.15
  6. Step 6: Final answer
    x = 1,617.17

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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.