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Finding the Fourth Proportional to 9,144.59, 13,715.49 and 2,903.80

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Solution

The fourth proportional to 9,144.59, 13,715.49 and 2,903.80 is: 4,355.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,144.59 : 13,715.49 = 2,903.80 : x
  2. Step 2: Convert to fraction form
    9,144.59/13,715.49 = 2,903.80/x
  3. Step 3: Cross multiply
    9,144.59x = 13,715.49 × 2,903.80
  4. Step 4: Simplify right side
    9,144.59x = 39,827,005.57
  5. Step 5: Solve for x
    x = 39,827,005.57/9,144.59
  6. Step 6: Final answer
    x = 4,355.25

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1.5x scale

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.