Home / 4,678.10-6,455.62-2,788.71

Finding the Fourth Proportional to 4,678.10, 6,455.62 and 2,788.71

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Solution

The fourth proportional to 4,678.10, 6,455.62 and 2,788.71 is: 3,848.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.10 : 6,455.62 = 2,788.71 : x
  2. Step 2: Convert to fraction form
    4,678.10/6,455.62 = 2,788.71/x
  3. Step 3: Cross multiply
    4,678.10x = 6,455.62 × 2,788.71
  4. Step 4: Simplify right side
    4,678.10x = 18,002,862.41
  5. Step 5: Solve for x
    x = 18,002,862.41/4,678.10
  6. Step 6: Final answer
    x = 3,848.33

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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.