Home / 1,948.45-2,688.84-1,151.77

Finding the Fourth Proportional to 1,948.45, 2,688.84 and 1,151.77

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Solution

The fourth proportional to 1,948.45, 2,688.84 and 1,151.77 is: 1,589.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.45 : 2,688.84 = 1,151.77 : x
  2. Step 2: Convert to fraction form
    1,948.45/2,688.84 = 1,151.77/x
  3. Step 3: Cross multiply
    1,948.45x = 2,688.84 × 1,151.77
  4. Step 4: Simplify right side
    1,948.45x = 3,096,925.25
  5. Step 5: Solve for x
    x = 3,096,925.25/1,948.45
  6. Step 6: Final answer
    x = 1,589.43

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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.