Home / 1,708.40-2,356.12-1,334.80

Finding the Fourth Proportional to 1,708.40, 2,356.12 and 1,334.80

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Solution

The fourth proportional to 1,708.40, 2,356.12 and 1,334.80 is: 1,840.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.40 : 2,356.12 = 1,334.80 : x
  2. Step 2: Convert to fraction form
    1,708.40/2,356.12 = 1,334.80/x
  3. Step 3: Cross multiply
    1,708.40x = 2,356.12 × 1,334.80
  4. Step 4: Simplify right side
    1,708.40x = 3,144,948.98
  5. Step 5: Solve for x
    x = 3,144,948.98/1,708.40
  6. Step 6: Final answer
    x = 1,840.87

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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.