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Finding the Fourth Proportional to 8,402.78, 11,594.42 and 4,865.38

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Solution

The fourth proportional to 8,402.78, 11,594.42 and 4,865.38 is: 6,713.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,402.78 : 11,594.42 = 4,865.38 : x
  2. Step 2: Convert to fraction form
    8,402.78/11,594.42 = 4,865.38/x
  3. Step 3: Cross multiply
    8,402.78x = 11,594.42 × 4,865.38
  4. Step 4: Simplify right side
    8,402.78x = 56,411,259.18
  5. Step 5: Solve for x
    x = 56,411,259.18/8,402.78
  6. Step 6: Final answer
    x = 6,713.40

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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.