Home / 2,153.12-3,221.51-1,276.08

Finding the Fourth Proportional to 2,153.12, 3,221.51 and 1,276.08

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Solution

The fourth proportional to 2,153.12, 3,221.51 and 1,276.08 is: 1,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.12 : 3,221.51 = 1,276.08 : x
  2. Step 2: Convert to fraction form
    2,153.12/3,221.51 = 1,276.08/x
  3. Step 3: Cross multiply
    2,153.12x = 3,221.51 × 1,276.08
  4. Step 4: Simplify right side
    2,153.12x = 4,110,898.10
  5. Step 5: Solve for x
    x = 4,110,898.10/2,153.12
  6. Step 6: Final answer
    x = 1,909.28

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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.