Home / 1,717.90-2,370.71-931.95

Finding the Fourth Proportional to 1,717.90, 2,370.71 and 931.95

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Solution

The fourth proportional to 1,717.90, 2,370.71 and 931.95 is: 1,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.90 : 2,370.71 = 931.95 : x
  2. Step 2: Convert to fraction form
    1,717.90/2,370.71 = 931.95/x
  3. Step 3: Cross multiply
    1,717.90x = 2,370.71 × 931.95
  4. Step 4: Simplify right side
    1,717.90x = 2,209,385.51
  5. Step 5: Solve for x
    x = 2,209,385.51/1,717.90
  6. Step 6: Final answer
    x = 1,286.10

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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.