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Finding the Fourth Proportional to 8,907.40, 13,365.90 and 3,713.80

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Solution

The fourth proportional to 8,907.40, 13,365.90 and 3,713.80 is: 5,572.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.40 : 13,365.90 = 3,713.80 : x
  2. Step 2: Convert to fraction form
    8,907.40/13,365.90 = 3,713.80/x
  3. Step 3: Cross multiply
    8,907.40x = 13,365.90 × 3,713.80
  4. Step 4: Simplify right side
    8,907.40x = 49,638,279.42
  5. Step 5: Solve for x
    x = 49,638,279.42/8,907.40
  6. Step 6: Final answer
    x = 5,572.70

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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.