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Finding the Fourth Proportional to 8,607.72, 11,877.68 and 4,830.11

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Solution

The fourth proportional to 8,607.72, 11,877.68 and 4,830.11 is: 6,665.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.72 : 11,877.68 = 4,830.11 : x
  2. Step 2: Convert to fraction form
    8,607.72/11,877.68 = 4,830.11/x
  3. Step 3: Cross multiply
    8,607.72x = 11,877.68 × 4,830.11
  4. Step 4: Simplify right side
    8,607.72x = 57,370,417.41
  5. Step 5: Solve for x
    x = 57,370,417.41/8,607.72
  6. Step 6: Final answer
    x = 6,665.00

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.