Home / 5,382.40-8,071.76-1,871.48

Finding the Fourth Proportional to 5,382.40, 8,071.76 and 1,871.48

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Solution

The fourth proportional to 5,382.40, 8,071.76 and 1,871.48 is: 2,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.40 : 8,071.76 = 1,871.48 : x
  2. Step 2: Convert to fraction form
    5,382.40/8,071.76 = 1,871.48/x
  3. Step 3: Cross multiply
    5,382.40x = 8,071.76 × 1,871.48
  4. Step 4: Simplify right side
    5,382.40x = 15,106,137.40
  5. Step 5: Solve for x
    x = 15,106,137.40/5,382.40
  6. Step 6: Final answer
    x = 2,806.58

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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.