Home / 1,176.60-1,626.78-1,030.80

Finding the Fourth Proportional to 1,176.60, 1,626.78 and 1,030.80

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Solution

The fourth proportional to 1,176.60, 1,626.78 and 1,030.80 is: 1,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.60 : 1,626.78 = 1,030.80 : x
  2. Step 2: Convert to fraction form
    1,176.60/1,626.78 = 1,030.80/x
  3. Step 3: Cross multiply
    1,176.60x = 1,626.78 × 1,030.80
  4. Step 4: Simplify right side
    1,176.60x = 1,676,884.82
  5. Step 5: Solve for x
    x = 1,676,884.82/1,176.60
  6. Step 6: Final answer
    x = 1,425.20

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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.