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Finding the Fourth Proportional to 9,985.02, 13,773.22 and 6,398.77

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Solution

The fourth proportional to 9,985.02, 13,773.22 and 6,398.77 is: 8,826.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.02 : 13,773.22 = 6,398.77 : x
  2. Step 2: Convert to fraction form
    9,985.02/13,773.22 = 6,398.77/x
  3. Step 3: Cross multiply
    9,985.02x = 13,773.22 × 6,398.77
  4. Step 4: Simplify right side
    9,985.02x = 88,131,666.94
  5. Step 5: Solve for x
    x = 88,131,666.94/9,985.02
  6. Step 6: Final answer
    x = 8,826.39

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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.