Home / 5,146.64-7,720-2,852.72

Finding the Fourth Proportional to 5,146.64, 7,720 and 2,852.72

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Solution

The fourth proportional to 5,146.64, 7,720 and 2,852.72 is: 4,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.64 : 7,720 = 2,852.72 : x
  2. Step 2: Convert to fraction form
    5,146.64/7,720 = 2,852.72/x
  3. Step 3: Cross multiply
    5,146.64x = 7,720 × 2,852.72
  4. Step 4: Simplify right side
    5,146.64x = 22,022,998.40
  5. Step 5: Solve for x
    x = 22,022,998.40/5,146.64
  6. Step 6: Final answer
    x = 4,279.10

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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.