Home / 1,839.40-2,538.66-1,343.68

Finding the Fourth Proportional to 1,839.40, 2,538.66 and 1,343.68

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Solution

The fourth proportional to 1,839.40, 2,538.66 and 1,343.68 is: 1,854.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.40 : 2,538.66 = 1,343.68 : x
  2. Step 2: Convert to fraction form
    1,839.40/2,538.66 = 1,343.68/x
  3. Step 3: Cross multiply
    1,839.40x = 2,538.66 × 1,343.68
  4. Step 4: Simplify right side
    1,839.40x = 3,411,146.67
  5. Step 5: Solve for x
    x = 3,411,146.67/1,839.40
  6. Step 6: Final answer
    x = 1,854.49

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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.