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Finding the Fourth Proportional to 4,886.78, 6,742.58 and 2,897.82

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Solution

The fourth proportional to 4,886.78, 6,742.58 and 2,897.82 is: 3,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.78 : 6,742.58 = 2,897.82 : x
  2. Step 2: Convert to fraction form
    4,886.78/6,742.58 = 2,897.82/x
  3. Step 3: Cross multiply
    4,886.78x = 6,742.58 × 2,897.82
  4. Step 4: Simplify right side
    4,886.78x = 19,538,768.69
  5. Step 5: Solve for x
    x = 19,538,768.69/4,886.78
  6. Step 6: Final answer
    x = 3,998.30

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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.