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Finding the Fourth Proportional to 8,965.86, 12,372.73 and 4,987.02

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Solution

The fourth proportional to 8,965.86, 12,372.73 and 4,987.02 is: 6,882.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.86 : 12,372.73 = 4,987.02 : x
  2. Step 2: Convert to fraction form
    8,965.86/12,372.73 = 4,987.02/x
  3. Step 3: Cross multiply
    8,965.86x = 12,372.73 × 4,987.02
  4. Step 4: Simplify right side
    8,965.86x = 61,703,051.96
  5. Step 5: Solve for x
    x = 61,703,051.96/8,965.86
  6. Step 6: Final answer
    x = 6,882.00

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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.