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Finding the Fourth Proportional to 8,557.12, 11,807.98 and 4,779.98

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Solution

The fourth proportional to 8,557.12, 11,807.98 and 4,779.98 is: 6,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.12 : 11,807.98 = 4,779.98 : x
  2. Step 2: Convert to fraction form
    8,557.12/11,807.98 = 4,779.98/x
  3. Step 3: Cross multiply
    8,557.12x = 11,807.98 × 4,779.98
  4. Step 4: Simplify right side
    8,557.12x = 56,441,908.24
  5. Step 5: Solve for x
    x = 56,441,908.24/8,557.12
  6. Step 6: Final answer
    x = 6,595.90

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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.