Home / 2,124.28-2,932.50-1,379.32

Finding the Fourth Proportional to 2,124.28, 2,932.50 and 1,379.32

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Solution

The fourth proportional to 2,124.28, 2,932.50 and 1,379.32 is: 1,904.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.28 : 2,932.50 = 1,379.32 : x
  2. Step 2: Convert to fraction form
    2,124.28/2,932.50 = 1,379.32/x
  3. Step 3: Cross multiply
    2,124.28x = 2,932.50 × 1,379.32
  4. Step 4: Simplify right side
    2,124.28x = 4,044,855.90
  5. Step 5: Solve for x
    x = 4,044,855.90/2,124.28
  6. Step 6: Final answer
    x = 1,904.11

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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.