Home / 2,989.49-4,125.87-1,810.56

Finding the Fourth Proportional to 2,989.49, 4,125.87 and 1,810.56

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Solution

The fourth proportional to 2,989.49, 4,125.87 and 1,810.56 is: 2,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.49 : 4,125.87 = 1,810.56 : x
  2. Step 2: Convert to fraction form
    2,989.49/4,125.87 = 1,810.56/x
  3. Step 3: Cross multiply
    2,989.49x = 4,125.87 × 1,810.56
  4. Step 4: Simplify right side
    2,989.49x = 7,470,126.13
  5. Step 5: Solve for x
    x = 7,470,126.13/2,989.49
  6. Step 6: Final answer
    x = 2,498.80

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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.