Home / 1,293.13-1,939.93-415.76

Finding the Fourth Proportional to 1,293.13, 1,939.93 and 415.76

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Solution

The fourth proportional to 1,293.13, 1,939.93 and 415.76 is: 623.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.13 : 1,939.93 = 415.76 : x
  2. Step 2: Convert to fraction form
    1,293.13/1,939.93 = 415.76/x
  3. Step 3: Cross multiply
    1,293.13x = 1,939.93 × 415.76
  4. Step 4: Simplify right side
    1,293.13x = 806,543.22
  5. Step 5: Solve for x
    x = 806,543.22/1,293.13
  6. Step 6: Final answer
    x = 623.72

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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.