Home / 1,803.50-2,489.64-1,206.98

Finding the Fourth Proportional to 1,803.50, 2,489.64 and 1,206.98

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Solution

The fourth proportional to 1,803.50, 2,489.64 and 1,206.98 is: 1,666.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.50 : 2,489.64 = 1,206.98 : x
  2. Step 2: Convert to fraction form
    1,803.50/2,489.64 = 1,206.98/x
  3. Step 3: Cross multiply
    1,803.50x = 2,489.64 × 1,206.98
  4. Step 4: Simplify right side
    1,803.50x = 3,004,945.69
  5. Step 5: Solve for x
    x = 3,004,945.69/1,803.50
  6. Step 6: Final answer
    x = 1,666.17

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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.