Home / 3,618.80-5,428.44-1,310

Finding the Fourth Proportional to 3,618.80, 5,428.44 and 1,310

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Solution

The fourth proportional to 3,618.80, 5,428.44 and 1,310 is: 1,965.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.80 : 5,428.44 = 1,310 : x
  2. Step 2: Convert to fraction form
    3,618.80/5,428.44 = 1,310/x
  3. Step 3: Cross multiply
    3,618.80x = 5,428.44 × 1,310
  4. Step 4: Simplify right side
    3,618.80x = 7,111,256.40
  5. Step 5: Solve for x
    x = 7,111,256.40/3,618.80
  6. Step 6: Final answer
    x = 1,965.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.