Home / 3,784.91-5,677.97-1,320.08

Finding the Fourth Proportional to 3,784.91, 5,677.97 and 1,320.08

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Solution

The fourth proportional to 3,784.91, 5,677.97 and 1,320.08 is: 1,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.91 : 5,677.97 = 1,320.08 : x
  2. Step 2: Convert to fraction form
    3,784.91/5,677.97 = 1,320.08/x
  3. Step 3: Cross multiply
    3,784.91x = 5,677.97 × 1,320.08
  4. Step 4: Simplify right side
    3,784.91x = 7,495,339.65
  5. Step 5: Solve for x
    x = 7,495,339.65/3,784.91
  6. Step 6: Final answer
    x = 1,980.32

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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.