Home / 1,905.60-2,858.56-750.72

Finding the Fourth Proportional to 1,905.60, 2,858.56 and 750.72

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Solution

The fourth proportional to 1,905.60, 2,858.56 and 750.72 is: 1,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.60 : 2,858.56 = 750.72 : x
  2. Step 2: Convert to fraction form
    1,905.60/2,858.56 = 750.72/x
  3. Step 3: Cross multiply
    1,905.60x = 2,858.56 × 750.72
  4. Step 4: Simplify right side
    1,905.60x = 2,145,978.16
  5. Step 5: Solve for x
    x = 2,145,978.16/1,905.60
  6. Step 6: Final answer
    x = 1,126.14

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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.