Home / 1,755.32-2,422.68-1,009.78

Finding the Fourth Proportional to 1,755.32, 2,422.68 and 1,009.78

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Solution

The fourth proportional to 1,755.32, 2,422.68 and 1,009.78 is: 1,393.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.32 : 2,422.68 = 1,009.78 : x
  2. Step 2: Convert to fraction form
    1,755.32/2,422.68 = 1,009.78/x
  3. Step 3: Cross multiply
    1,755.32x = 2,422.68 × 1,009.78
  4. Step 4: Simplify right side
    1,755.32x = 2,446,373.81
  5. Step 5: Solve for x
    x = 2,446,373.81/1,755.32
  6. Step 6: Final answer
    x = 1,393.69

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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.