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Finding the Fourth Proportional to 8,604.40, 12,889.90 and 5,037.90

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Solution

The fourth proportional to 8,604.40, 12,889.90 and 5,037.90 is: 7,547.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.40 : 12,889.90 = 5,037.90 : x
  2. Step 2: Convert to fraction form
    8,604.40/12,889.90 = 5,037.90/x
  3. Step 3: Cross multiply
    8,604.40x = 12,889.90 × 5,037.90
  4. Step 4: Simplify right side
    8,604.40x = 64,938,027.21
  5. Step 5: Solve for x
    x = 64,938,027.21/8,604.40
  6. Step 6: Final answer
    x = 7,547.07

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Why These Related Problems?

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