Home / 1,302.12-1,798.56-1,177.80

Finding the Fourth Proportional to 1,302.12, 1,798.56 and 1,177.80

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Solution

The fourth proportional to 1,302.12, 1,798.56 and 1,177.80 is: 1,626.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.12 : 1,798.56 = 1,177.80 : x
  2. Step 2: Convert to fraction form
    1,302.12/1,798.56 = 1,177.80/x
  3. Step 3: Cross multiply
    1,302.12x = 1,798.56 × 1,177.80
  4. Step 4: Simplify right side
    1,302.12x = 2,118,343.97
  5. Step 5: Solve for x
    x = 2,118,343.97/1,302.12
  6. Step 6: Final answer
    x = 1,626.84

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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.