Home / 1,949.47-2,688.19-1,666.98

Finding the Fourth Proportional to 1,949.47, 2,688.19 and 1,666.98

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Solution

The fourth proportional to 1,949.47, 2,688.19 and 1,666.98 is: 2,298.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.47 : 2,688.19 = 1,666.98 : x
  2. Step 2: Convert to fraction form
    1,949.47/2,688.19 = 1,666.98/x
  3. Step 3: Cross multiply
    1,949.47x = 2,688.19 × 1,666.98
  4. Step 4: Simplify right side
    1,949.47x = 4,481,154.80
  5. Step 5: Solve for x
    x = 4,481,154.80/1,949.47
  6. Step 6: Final answer
    x = 2,298.66

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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.