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Finding the Fourth Proportional to 8,633.79, 11,913.93 and 4,857.57

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Solution

The fourth proportional to 8,633.79, 11,913.93 and 4,857.57 is: 6,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.79 : 11,913.93 = 4,857.57 : x
  2. Step 2: Convert to fraction form
    8,633.79/11,913.93 = 4,857.57/x
  3. Step 3: Cross multiply
    8,633.79x = 11,913.93 × 4,857.57
  4. Step 4: Simplify right side
    8,633.79x = 57,872,748.95
  5. Step 5: Solve for x
    x = 57,872,748.95/8,633.79
  6. Step 6: Final answer
    x = 6,703.05

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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.