Home / 3,116.40-4,672.80-1,168.80

Finding the Fourth Proportional to 3,116.40, 4,672.80 and 1,168.80

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Solution

The fourth proportional to 3,116.40, 4,672.80 and 1,168.80 is: 1,752.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.40 : 4,672.80 = 1,168.80 : x
  2. Step 2: Convert to fraction form
    3,116.40/4,672.80 = 1,168.80/x
  3. Step 3: Cross multiply
    3,116.40x = 4,672.80 × 1,168.80
  4. Step 4: Simplify right side
    3,116.40x = 5,461,568.64
  5. Step 5: Solve for x
    x = 5,461,568.64/3,116.40
  6. Step 6: Final answer
    x = 1,752.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.