Home / 1,291.41-1,935.84-510.84

Finding the Fourth Proportional to 1,291.41, 1,935.84 and 510.84

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Solution

The fourth proportional to 1,291.41, 1,935.84 and 510.84 is: 765.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.41 : 1,935.84 = 510.84 : x
  2. Step 2: Convert to fraction form
    1,291.41/1,935.84 = 510.84/x
  3. Step 3: Cross multiply
    1,291.41x = 1,935.84 × 510.84
  4. Step 4: Simplify right side
    1,291.41x = 988,904.51
  5. Step 5: Solve for x
    x = 988,904.51/1,291.41
  6. Step 6: Final answer
    x = 765.76

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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.