Home / 1,291.14-1,935.36-510.93

Finding the Fourth Proportional to 1,291.14, 1,935.36 and 510.93

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Solution

The fourth proportional to 1,291.14, 1,935.36 and 510.93 is: 765.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.14 : 1,935.36 = 510.93 : x
  2. Step 2: Convert to fraction form
    1,291.14/1,935.36 = 510.93/x
  3. Step 3: Cross multiply
    1,291.14x = 1,935.36 × 510.93
  4. Step 4: Simplify right side
    1,291.14x = 988,833.48
  5. Step 5: Solve for x
    x = 988,833.48/1,291.14
  6. Step 6: Final answer
    x = 765.86

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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.