Home / 5,417.64-8,129.82-2,130.15

Finding the Fourth Proportional to 5,417.64, 8,129.82 and 2,130.15

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Solution

The fourth proportional to 5,417.64, 8,129.82 and 2,130.15 is: 3,196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.64 : 8,129.82 = 2,130.15 : x
  2. Step 2: Convert to fraction form
    5,417.64/8,129.82 = 2,130.15/x
  3. Step 3: Cross multiply
    5,417.64x = 8,129.82 × 2,130.15
  4. Step 4: Simplify right side
    5,417.64x = 17,317,736.07
  5. Step 5: Solve for x
    x = 17,317,736.07/5,417.64
  6. Step 6: Final answer
    x = 3,196.55

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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.