Home / 2,989.68-4,125.99-1,810.86

Finding the Fourth Proportional to 2,989.68, 4,125.99 and 1,810.86

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Solution

The fourth proportional to 2,989.68, 4,125.99 and 1,810.86 is: 2,499.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.68 : 4,125.99 = 1,810.86 : x
  2. Step 2: Convert to fraction form
    2,989.68/4,125.99 = 1,810.86/x
  3. Step 3: Cross multiply
    2,989.68x = 4,125.99 × 1,810.86
  4. Step 4: Simplify right side
    2,989.68x = 7,471,590.25
  5. Step 5: Solve for x
    x = 7,471,590.25/2,989.68
  6. Step 6: Final answer
    x = 2,499.13

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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.