Home / 1,261.15-1,901.39-1,176.45

Finding the Fourth Proportional to 1,261.15, 1,901.39 and 1,176.45

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Solution

The fourth proportional to 1,261.15, 1,901.39 and 1,176.45 is: 1,773.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.15 : 1,901.39 = 1,176.45 : x
  2. Step 2: Convert to fraction form
    1,261.15/1,901.39 = 1,176.45/x
  3. Step 3: Cross multiply
    1,261.15x = 1,901.39 × 1,176.45
  4. Step 4: Simplify right side
    1,261.15x = 2,236,890.27
  5. Step 5: Solve for x
    x = 2,236,890.27/1,261.15
  6. Step 6: Final answer
    x = 1,773.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.