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Finding the Fourth Proportional to 8,918.04, 12,295.72 and 5,725.71

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Solution

The fourth proportional to 8,918.04, 12,295.72 and 5,725.71 is: 7,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.04 : 12,295.72 = 5,725.71 : x
  2. Step 2: Convert to fraction form
    8,918.04/12,295.72 = 5,725.71/x
  3. Step 3: Cross multiply
    8,918.04x = 12,295.72 × 5,725.71
  4. Step 4: Simplify right side
    8,918.04x = 70,401,726.96
  5. Step 5: Solve for x
    x = 70,401,726.96/8,918.04
  6. Step 6: Final answer
    x = 7,894.30

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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.