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Finding the Fourth Proportional to 7,504.40, 11,263.40 and 3,809.20

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Solution

The fourth proportional to 7,504.40, 11,263.40 and 3,809.20 is: 5,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,504.40 : 11,263.40 = 3,809.20 : x
  2. Step 2: Convert to fraction form
    7,504.40/11,263.40 = 3,809.20/x
  3. Step 3: Cross multiply
    7,504.40x = 11,263.40 × 3,809.20
  4. Step 4: Simplify right side
    7,504.40x = 42,904,543.28
  5. Step 5: Solve for x
    x = 42,904,543.28/7,504.40
  6. Step 6: Final answer
    x = 5,717.25

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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.