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Finding the Fourth Proportional to 7,453.78, 10,287.47 and 4,311.78

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Solution

The fourth proportional to 7,453.78, 10,287.47 and 4,311.78 is: 5,950.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,453.78 : 10,287.47 = 4,311.78 : x
  2. Step 2: Convert to fraction form
    7,453.78/10,287.47 = 4,311.78/x
  3. Step 3: Cross multiply
    7,453.78x = 10,287.47 × 4,311.78
  4. Step 4: Simplify right side
    7,453.78x = 44,357,307.40
  5. Step 5: Solve for x
    x = 44,357,307.40/7,453.78
  6. Step 6: Final answer
    x = 5,950.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.