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Finding the Fourth Proportional to 8,700.09, 13,045.23 and 2,856.21

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Solution

The fourth proportional to 8,700.09, 13,045.23 and 2,856.21 is: 4,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.09 : 13,045.23 = 2,856.21 : x
  2. Step 2: Convert to fraction form
    8,700.09/13,045.23 = 2,856.21/x
  3. Step 3: Cross multiply
    8,700.09x = 13,045.23 × 2,856.21
  4. Step 4: Simplify right side
    8,700.09x = 37,259,916.38
  5. Step 5: Solve for x
    x = 37,259,916.38/8,700.09
  6. Step 6: Final answer
    x = 4,282.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.