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Finding the Fourth Proportional to 2,830.47, 4,245.63 and 750.48

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Solution

The fourth proportional to 2,830.47, 4,245.63 and 750.48 is: 1,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.47 : 4,245.63 = 750.48 : x
  2. Step 2: Convert to fraction form
    2,830.47/4,245.63 = 750.48/x
  3. Step 3: Cross multiply
    2,830.47x = 4,245.63 × 750.48
  4. Step 4: Simplify right side
    2,830.47x = 3,186,260.40
  5. Step 5: Solve for x
    x = 3,186,260.40/2,830.47
  6. Step 6: Final answer
    x = 1,125.70

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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.