Home / 3,881.64-5,356.52-2,113.20

Finding the Fourth Proportional to 3,881.64, 5,356.52 and 2,113.20

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Solution

The fourth proportional to 3,881.64, 5,356.52 and 2,113.20 is: 2,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.64 : 5,356.52 = 2,113.20 : x
  2. Step 2: Convert to fraction form
    3,881.64/5,356.52 = 2,113.20/x
  3. Step 3: Cross multiply
    3,881.64x = 5,356.52 × 2,113.20
  4. Step 4: Simplify right side
    3,881.64x = 11,319,398.06
  5. Step 5: Solve for x
    x = 11,319,398.06/3,881.64
  6. Step 6: Final answer
    x = 2,916.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.