Home / 7,913.30-11,871.56-2,648.84

Finding the Fourth Proportional to 7,913.30, 11,871.56 and 2,648.84

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Solution

The fourth proportional to 7,913.30, 11,871.56 and 2,648.84 is: 3,973.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.30 : 11,871.56 = 2,648.84 : x
  2. Step 2: Convert to fraction form
    7,913.30/11,871.56 = 2,648.84/x
  3. Step 3: Cross multiply
    7,913.30x = 11,871.56 × 2,648.84
  4. Step 4: Simplify right side
    7,913.30x = 31,445,810.25
  5. Step 5: Solve for x
    x = 31,445,810.25/7,913.30
  6. Step 6: Final answer
    x = 3,973.79

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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.