Home / 4,678.15-6,455.69-2,788.76

Finding the Fourth Proportional to 4,678.15, 6,455.69 and 2,788.76

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Solution

The fourth proportional to 4,678.15, 6,455.69 and 2,788.76 is: 3,848.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.15 : 6,455.69 = 2,788.76 : x
  2. Step 2: Convert to fraction form
    4,678.15/6,455.69 = 2,788.76/x
  3. Step 3: Cross multiply
    4,678.15x = 6,455.69 × 2,788.76
  4. Step 4: Simplify right side
    4,678.15x = 18,003,323.82
  5. Step 5: Solve for x
    x = 18,003,323.82/4,678.15
  6. Step 6: Final answer
    x = 3,848.39

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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.