Home / 2,905.40-4,355.65-1,260.71

Finding the Fourth Proportional to 2,905.40, 4,355.65 and 1,260.71

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Solution

The fourth proportional to 2,905.40, 4,355.65 and 1,260.71 is: 1,889.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.40 : 4,355.65 = 1,260.71 : x
  2. Step 2: Convert to fraction form
    2,905.40/4,355.65 = 1,260.71/x
  3. Step 3: Cross multiply
    2,905.40x = 4,355.65 × 1,260.71
  4. Step 4: Simplify right side
    2,905.40x = 5,491,186.58
  5. Step 5: Solve for x
    x = 5,491,186.58/2,905.40
  6. Step 6: Final answer
    x = 1,889.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.