Home / 1,955.15-2,697.33-1,207.80

Finding the Fourth Proportional to 1,955.15, 2,697.33 and 1,207.80

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Solution

The fourth proportional to 1,955.15, 2,697.33 and 1,207.80 is: 1,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.15 : 2,697.33 = 1,207.80 : x
  2. Step 2: Convert to fraction form
    1,955.15/2,697.33 = 1,207.80/x
  3. Step 3: Cross multiply
    1,955.15x = 2,697.33 × 1,207.80
  4. Step 4: Simplify right side
    1,955.15x = 3,257,835.17
  5. Step 5: Solve for x
    x = 3,257,835.17/1,955.15
  6. Step 6: Final answer
    x = 1,666.28

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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.