Home / 4,921.64-6,787.28-3,665.76

Finding the Fourth Proportional to 4,921.64, 6,787.28 and 3,665.76

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Solution

The fourth proportional to 4,921.64, 6,787.28 and 3,665.76 is: 5,055.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.64 : 6,787.28 = 3,665.76 : x
  2. Step 2: Convert to fraction form
    4,921.64/6,787.28 = 3,665.76/x
  3. Step 3: Cross multiply
    4,921.64x = 6,787.28 × 3,665.76
  4. Step 4: Simplify right side
    4,921.64x = 24,880,539.53
  5. Step 5: Solve for x
    x = 24,880,539.53/4,921.64
  6. Step 6: Final answer
    x = 5,055.34

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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.