Home / 2,187.10-3,280.14-1,076

Finding the Fourth Proportional to 2,187.10, 3,280.14 and 1,076

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Solution

The fourth proportional to 2,187.10, 3,280.14 and 1,076 is: 1,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.10 : 3,280.14 = 1,076 : x
  2. Step 2: Convert to fraction form
    2,187.10/3,280.14 = 1,076/x
  3. Step 3: Cross multiply
    2,187.10x = 3,280.14 × 1,076
  4. Step 4: Simplify right side
    2,187.10x = 3,529,430.64
  5. Step 5: Solve for x
    x = 3,529,430.64/2,187.10
  6. Step 6: Final answer
    x = 1,613.75

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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.