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Finding the Fourth Proportional to 8,985.39, 12,400.55 and 4,952.93

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Solution

The fourth proportional to 8,985.39, 12,400.55 and 4,952.93 is: 6,835.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.39 : 12,400.55 = 4,952.93 : x
  2. Step 2: Convert to fraction form
    8,985.39/12,400.55 = 4,952.93/x
  3. Step 3: Cross multiply
    8,985.39x = 12,400.55 × 4,952.93
  4. Step 4: Simplify right side
    8,985.39x = 61,419,048.75
  5. Step 5: Solve for x
    x = 61,419,048.75/8,985.39
  6. Step 6: Final answer
    x = 6,835.44

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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.