Home / 5,152.12-7,721.40-2,813.16

Finding the Fourth Proportional to 5,152.12, 7,721.40 and 2,813.16

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Solution

The fourth proportional to 5,152.12, 7,721.40 and 2,813.16 is: 4,216.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,152.12 : 7,721.40 = 2,813.16 : x
  2. Step 2: Convert to fraction form
    5,152.12/7,721.40 = 2,813.16/x
  3. Step 3: Cross multiply
    5,152.12x = 7,721.40 × 2,813.16
  4. Step 4: Simplify right side
    5,152.12x = 21,721,533.62
  5. Step 5: Solve for x
    x = 21,721,533.62/5,152.12
  6. Step 6: Final answer
    x = 4,216.04

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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.