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Finding the Fourth Proportional to 4,865.22, 6,715.35 and 2,876.87

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Solution

The fourth proportional to 4,865.22, 6,715.35 and 2,876.87 is: 3,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,865.22 : 6,715.35 = 2,876.87 : x
  2. Step 2: Convert to fraction form
    4,865.22/6,715.35 = 2,876.87/x
  3. Step 3: Cross multiply
    4,865.22x = 6,715.35 × 2,876.87
  4. Step 4: Simplify right side
    4,865.22x = 19,319,205.74
  5. Step 5: Solve for x
    x = 19,319,205.74/4,865.22
  6. Step 6: Final answer
    x = 3,970.88

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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.