Home / 3,837.60-5,756.40-1,240.47

Finding the Fourth Proportional to 3,837.60, 5,756.40 and 1,240.47

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Solution

The fourth proportional to 3,837.60, 5,756.40 and 1,240.47 is: 1,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,837.60 : 5,756.40 = 1,240.47 : x
  2. Step 2: Convert to fraction form
    3,837.60/5,756.40 = 1,240.47/x
  3. Step 3: Cross multiply
    3,837.60x = 5,756.40 × 1,240.47
  4. Step 4: Simplify right side
    3,837.60x = 7,140,641.51
  5. Step 5: Solve for x
    x = 7,140,641.51/3,837.60
  6. Step 6: Final answer
    x = 1,860.71

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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.