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Finding the Fourth Proportional to 7,269.77, 10,909.43 and 3,985.19

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Solution

The fourth proportional to 7,269.77, 10,909.43 and 3,985.19 is: 5,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,269.77 : 10,909.43 = 3,985.19 : x
  2. Step 2: Convert to fraction form
    7,269.77/10,909.43 = 3,985.19/x
  3. Step 3: Cross multiply
    7,269.77x = 10,909.43 × 3,985.19
  4. Step 4: Simplify right side
    7,269.77x = 43,476,151.34
  5. Step 5: Solve for x
    x = 43,476,151.34/7,269.77
  6. Step 6: Final answer
    x = 5,980.40

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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.