Home / 5,112.40-7,656.45-2,512.30

Finding the Fourth Proportional to 5,112.40, 7,656.45 and 2,512.30

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Solution

The fourth proportional to 5,112.40, 7,656.45 and 2,512.30 is: 3,762.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.40 : 7,656.45 = 2,512.30 : x
  2. Step 2: Convert to fraction form
    5,112.40/7,656.45 = 2,512.30/x
  3. Step 3: Cross multiply
    5,112.40x = 7,656.45 × 2,512.30
  4. Step 4: Simplify right side
    5,112.40x = 19,235,299.34
  5. Step 5: Solve for x
    x = 19,235,299.34/5,112.40
  6. Step 6: Final answer
    x = 3,762.48

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1.5x scale

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.