Home / 7,909.40-11,860.06-2,642.51

Finding the Fourth Proportional to 7,909.40, 11,860.06 and 2,642.51

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Solution

The fourth proportional to 7,909.40, 11,860.06 and 2,642.51 is: 3,962.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.40 : 11,860.06 = 2,642.51 : x
  2. Step 2: Convert to fraction form
    7,909.40/11,860.06 = 2,642.51/x
  3. Step 3: Cross multiply
    7,909.40x = 11,860.06 × 2,642.51
  4. Step 4: Simplify right side
    7,909.40x = 31,340,384.82
  5. Step 5: Solve for x
    x = 31,340,384.82/7,909.40
  6. Step 6: Final answer
    x = 3,962.42

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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.