Home / 1,214.29-1,675.33-717.13

Finding the Fourth Proportional to 1,214.29, 1,675.33 and 717.13

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Solution

The fourth proportional to 1,214.29, 1,675.33 and 717.13 is: 989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.29 : 1,675.33 = 717.13 : x
  2. Step 2: Convert to fraction form
    1,214.29/1,675.33 = 717.13/x
  3. Step 3: Cross multiply
    1,214.29x = 1,675.33 × 717.13
  4. Step 4: Simplify right side
    1,214.29x = 1,201,429.40
  5. Step 5: Solve for x
    x = 1,201,429.40/1,214.29
  6. Step 6: Final answer
    x = 989.41

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1.5x scale

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.