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Finding the Fourth Proportional to 4,787.01, 7,182.81 and 2,478.51

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Solution

The fourth proportional to 4,787.01, 7,182.81 and 2,478.51 is: 3,718.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.01 : 7,182.81 = 2,478.51 : x
  2. Step 2: Convert to fraction form
    4,787.01/7,182.81 = 2,478.51/x
  3. Step 3: Cross multiply
    4,787.01x = 7,182.81 × 2,478.51
  4. Step 4: Simplify right side
    4,787.01x = 17,802,666.41
  5. Step 5: Solve for x
    x = 17,802,666.41/4,787.01
  6. Step 6: Final answer
    x = 3,718.95

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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.