Home / 5,486.68-7,570.56-3,128.76

Finding the Fourth Proportional to 5,486.68, 7,570.56 and 3,128.76

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Solution

The fourth proportional to 5,486.68, 7,570.56 and 3,128.76 is: 4,317.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.68 : 7,570.56 = 3,128.76 : x
  2. Step 2: Convert to fraction form
    5,486.68/7,570.56 = 3,128.76/x
  3. Step 3: Cross multiply
    5,486.68x = 7,570.56 × 3,128.76
  4. Step 4: Simplify right side
    5,486.68x = 23,686,465.31
  5. Step 5: Solve for x
    x = 23,686,465.31/5,486.68
  6. Step 6: Final answer
    x = 4,317.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.