Home / 4,787.40-7,176.80-1,708.68

Finding the Fourth Proportional to 4,787.40, 7,176.80 and 1,708.68

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Solution

The fourth proportional to 4,787.40, 7,176.80 and 1,708.68 is: 2,561.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.40 : 7,176.80 = 1,708.68 : x
  2. Step 2: Convert to fraction form
    4,787.40/7,176.80 = 1,708.68/x
  3. Step 3: Cross multiply
    4,787.40x = 7,176.80 × 1,708.68
  4. Step 4: Simplify right side
    4,787.40x = 12,262,854.62
  5. Step 5: Solve for x
    x = 12,262,854.62/4,787.40
  6. Step 6: Final answer
    x = 2,561.49

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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.