Home / 2,689.20-3,710.91-1,804.86

Finding the Fourth Proportional to 2,689.20, 3,710.91 and 1,804.86

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Solution

The fourth proportional to 2,689.20, 3,710.91 and 1,804.86 is: 2,490.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.20 : 3,710.91 = 1,804.86 : x
  2. Step 2: Convert to fraction form
    2,689.20/3,710.91 = 1,804.86/x
  3. Step 3: Cross multiply
    2,689.20x = 3,710.91 × 1,804.86
  4. Step 4: Simplify right side
    2,689.20x = 6,697,673.02
  5. Step 5: Solve for x
    x = 6,697,673.02/2,689.20
  6. Step 6: Final answer
    x = 2,490.58

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1.5x scale

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.