Home / 7,412.54-11,118.53-1,865.81

Finding the Fourth Proportional to 7,412.54, 11,118.53 and 1,865.81

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Solution

The fourth proportional to 7,412.54, 11,118.53 and 1,865.81 is: 2,798.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.54 : 11,118.53 = 1,865.81 : x
  2. Step 2: Convert to fraction form
    7,412.54/11,118.53 = 1,865.81/x
  3. Step 3: Cross multiply
    7,412.54x = 11,118.53 × 1,865.81
  4. Step 4: Simplify right side
    7,412.54x = 20,745,064.46
  5. Step 5: Solve for x
    x = 20,745,064.46/7,412.54
  6. Step 6: Final answer
    x = 2,798.64

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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.