Home / 3,131.10-4,320.65-1,804.52

Finding the Fourth Proportional to 3,131.10, 4,320.65 and 1,804.52

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Solution

The fourth proportional to 3,131.10, 4,320.65 and 1,804.52 is: 2,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.10 : 4,320.65 = 1,804.52 : x
  2. Step 2: Convert to fraction form
    3,131.10/4,320.65 = 1,804.52/x
  3. Step 3: Cross multiply
    3,131.10x = 4,320.65 × 1,804.52
  4. Step 4: Simplify right side
    3,131.10x = 7,796,668.71
  5. Step 5: Solve for x
    x = 7,796,668.71/3,131.10
  6. Step 6: Final answer
    x = 2,490.07

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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.