Home / 1,871.36-2,803.40-1,376.86

Finding the Fourth Proportional to 1,871.36, 2,803.40 and 1,376.86

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Solution

The fourth proportional to 1,871.36, 2,803.40 and 1,376.86 is: 2,062.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.36 : 2,803.40 = 1,376.86 : x
  2. Step 2: Convert to fraction form
    1,871.36/2,803.40 = 1,376.86/x
  3. Step 3: Cross multiply
    1,871.36x = 2,803.40 × 1,376.86
  4. Step 4: Simplify right side
    1,871.36x = 3,859,889.32
  5. Step 5: Solve for x
    x = 3,859,889.32/1,871.36
  6. Step 6: Final answer
    x = 2,062.61

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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.