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Finding the Fourth Proportional to 4,886.79, 6,742.91 and 2,897.83

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Solution

The fourth proportional to 4,886.79, 6,742.91 and 2,897.83 is: 3,998.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.79 : 6,742.91 = 2,897.83 : x
  2. Step 2: Convert to fraction form
    4,886.79/6,742.91 = 2,897.83/x
  3. Step 3: Cross multiply
    4,886.79x = 6,742.91 × 2,897.83
  4. Step 4: Simplify right side
    4,886.79x = 19,539,806.89
  5. Step 5: Solve for x
    x = 19,539,806.89/4,886.79
  6. Step 6: Final answer
    x = 3,998.50

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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.