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Finding the Fourth Proportional to 8,420.03, 12,592.51 and 6,316.86

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Solution

The fourth proportional to 8,420.03, 12,592.51 and 6,316.86 is: 9,447.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.03 : 12,592.51 = 6,316.86 : x
  2. Step 2: Convert to fraction form
    8,420.03/12,592.51 = 6,316.86/x
  3. Step 3: Cross multiply
    8,420.03x = 12,592.51 × 6,316.86
  4. Step 4: Simplify right side
    8,420.03x = 79,545,106.93
  5. Step 5: Solve for x
    x = 79,545,106.93/8,420.03
  6. Step 6: Final answer
    x = 9,447.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.