Home / 1,717.78-2,370.51-931.82

Finding the Fourth Proportional to 1,717.78, 2,370.51 and 931.82

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Solution

The fourth proportional to 1,717.78, 2,370.51 and 931.82 is: 1,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.78 : 2,370.51 = 931.82 : x
  2. Step 2: Convert to fraction form
    1,717.78/2,370.51 = 931.82/x
  3. Step 3: Cross multiply
    1,717.78x = 2,370.51 × 931.82
  4. Step 4: Simplify right side
    1,717.78x = 2,208,888.63
  5. Step 5: Solve for x
    x = 2,208,888.63/1,717.78
  6. Step 6: Final answer
    x = 1,285.90

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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.