Home / 1,351.24-1,864.59-761.87

Finding the Fourth Proportional to 1,351.24, 1,864.59 and 761.87

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Solution

The fourth proportional to 1,351.24, 1,864.59 and 761.87 is: 1,051.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.24 : 1,864.59 = 761.87 : x
  2. Step 2: Convert to fraction form
    1,351.24/1,864.59 = 761.87/x
  3. Step 3: Cross multiply
    1,351.24x = 1,864.59 × 761.87
  4. Step 4: Simplify right side
    1,351.24x = 1,420,575.18
  5. Step 5: Solve for x
    x = 1,420,575.18/1,351.24
  6. Step 6: Final answer
    x = 1,051.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.