Home / 3,881.59-5,356.60-2,113.20

Finding the Fourth Proportional to 3,881.59, 5,356.60 and 2,113.20

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Solution

The fourth proportional to 3,881.59, 5,356.60 and 2,113.20 is: 2,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.59 : 5,356.60 = 2,113.20 : x
  2. Step 2: Convert to fraction form
    3,881.59/5,356.60 = 2,113.20/x
  3. Step 3: Cross multiply
    3,881.59x = 5,356.60 × 2,113.20
  4. Step 4: Simplify right side
    3,881.59x = 11,319,561.84
  5. Step 5: Solve for x
    x = 11,319,561.84/3,881.59
  6. Step 6: Final answer
    x = 2,916.22

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1.5x scale

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.