Home / 3,459.52-5,190-1,511.20

Finding the Fourth Proportional to 3,459.52, 5,190 and 1,511.20

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Solution

The fourth proportional to 3,459.52, 5,190 and 1,511.20 is: 2,267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.52 : 5,190 = 1,511.20 : x
  2. Step 2: Convert to fraction form
    3,459.52/5,190 = 1,511.20/x
  3. Step 3: Cross multiply
    3,459.52x = 5,190 × 1,511.20
  4. Step 4: Simplify right side
    3,459.52x = 7,843,128
  5. Step 5: Solve for x
    x = 7,843,128/3,459.52
  6. Step 6: Final answer
    x = 2,267.11

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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.