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Finding the Fourth Proportional to 7,499.76, 10,274.62 and 7,219.40

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Solution

The fourth proportional to 7,499.76, 10,274.62 and 7,219.40 is: 9,890.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,499.76 : 10,274.62 = 7,219.40 : x
  2. Step 2: Convert to fraction form
    7,499.76/10,274.62 = 7,219.40/x
  3. Step 3: Cross multiply
    7,499.76x = 10,274.62 × 7,219.40
  4. Step 4: Simplify right side
    7,499.76x = 74,176,591.63
  5. Step 5: Solve for x
    x = 74,176,591.63/7,499.76
  6. Step 6: Final answer
    x = 9,890.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.