Home / 7,420.64-11,133.02-2,742.89

Finding the Fourth Proportional to 7,420.64, 11,133.02 and 2,742.89

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Solution

The fourth proportional to 7,420.64, 11,133.02 and 2,742.89 is: 4,115.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.64 : 11,133.02 = 2,742.89 : x
  2. Step 2: Convert to fraction form
    7,420.64/11,133.02 = 2,742.89/x
  3. Step 3: Cross multiply
    7,420.64x = 11,133.02 × 2,742.89
  4. Step 4: Simplify right side
    7,420.64x = 30,536,600.42
  5. Step 5: Solve for x
    x = 30,536,600.42/7,420.64
  6. Step 6: Final answer
    x = 4,115.09

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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.