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Finding the Fourth Proportional to 7,503.40, 11,240.70 and 4,421.80

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Solution

The fourth proportional to 7,503.40, 11,240.70 and 4,421.80 is: 6,624.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,503.40 : 11,240.70 = 4,421.80 : x
  2. Step 2: Convert to fraction form
    7,503.40/11,240.70 = 4,421.80/x
  3. Step 3: Cross multiply
    7,503.40x = 11,240.70 × 4,421.80
  4. Step 4: Simplify right side
    7,503.40x = 49,704,127.26
  5. Step 5: Solve for x
    x = 49,704,127.26/7,503.40
  6. Step 6: Final answer
    x = 6,624.21

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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.