Home / 5,125.40-7,681.87-2,779.84

Finding the Fourth Proportional to 5,125.40, 7,681.87 and 2,779.84

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Solution

The fourth proportional to 5,125.40, 7,681.87 and 2,779.84 is: 4,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.40 : 7,681.87 = 2,779.84 : x
  2. Step 2: Convert to fraction form
    5,125.40/7,681.87 = 2,779.84/x
  3. Step 3: Cross multiply
    5,125.40x = 7,681.87 × 2,779.84
  4. Step 4: Simplify right side
    5,125.40x = 21,354,382.58
  5. Step 5: Solve for x
    x = 21,354,382.58/5,125.40
  6. Step 6: Final answer
    x = 4,166.38

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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.