Home / 1,955.45-2,697.68-1,247.10

Finding the Fourth Proportional to 1,955.45, 2,697.68 and 1,247.10

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Solution

The fourth proportional to 1,955.45, 2,697.68 and 1,247.10 is: 1,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.45 : 2,697.68 = 1,247.10 : x
  2. Step 2: Convert to fraction form
    1,955.45/2,697.68 = 1,247.10/x
  3. Step 3: Cross multiply
    1,955.45x = 2,697.68 × 1,247.10
  4. Step 4: Simplify right side
    1,955.45x = 3,364,270.49
  5. Step 5: Solve for x
    x = 3,364,270.49/1,955.45
  6. Step 6: Final answer
    x = 1,720.46

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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.