Home / 1,887.96-2,605.70-1,101.86

Finding the Fourth Proportional to 1,887.96, 2,605.70 and 1,101.86

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Solution

The fourth proportional to 1,887.96, 2,605.70 and 1,101.86 is: 1,520.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.96 : 2,605.70 = 1,101.86 : x
  2. Step 2: Convert to fraction form
    1,887.96/2,605.70 = 1,101.86/x
  3. Step 3: Cross multiply
    1,887.96x = 2,605.70 × 1,101.86
  4. Step 4: Simplify right side
    1,887.96x = 2,871,098.06
  5. Step 5: Solve for x
    x = 2,871,098.06/1,887.96
  6. Step 6: Final answer
    x = 1,520.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.