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Finding the Fourth Proportional to 4,865.94, 6,715.16 and 2,878.20

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Solution

The fourth proportional to 4,865.94, 6,715.16 and 2,878.20 is: 3,972.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,865.94 : 6,715.16 = 2,878.20 : x
  2. Step 2: Convert to fraction form
    4,865.94/6,715.16 = 2,878.20/x
  3. Step 3: Cross multiply
    4,865.94x = 6,715.16 × 2,878.20
  4. Step 4: Simplify right side
    4,865.94x = 19,327,525.55
  5. Step 5: Solve for x
    x = 19,327,525.55/4,865.94
  6. Step 6: Final answer
    x = 3,972.01

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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.