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Finding the Fourth Proportional to 8,985.56, 12,400.08 and 5,006.81

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Solution

The fourth proportional to 8,985.56, 12,400.08 and 5,006.81 is: 6,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.56 : 12,400.08 = 5,006.81 : x
  2. Step 2: Convert to fraction form
    8,985.56/12,400.08 = 5,006.81/x
  3. Step 3: Cross multiply
    8,985.56x = 12,400.08 × 5,006.81
  4. Step 4: Simplify right side
    8,985.56x = 62,084,782.54
  5. Step 5: Solve for x
    x = 62,084,782.54/8,985.56
  6. Step 6: Final answer
    x = 6,909.40

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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.