Home / 3,116.13-4,674.21-807.63

Finding the Fourth Proportional to 3,116.13, 4,674.21 and 807.63

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Solution

The fourth proportional to 3,116.13, 4,674.21 and 807.63 is: 1,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.13 : 4,674.21 = 807.63 : x
  2. Step 2: Convert to fraction form
    3,116.13/4,674.21 = 807.63/x
  3. Step 3: Cross multiply
    3,116.13x = 4,674.21 × 807.63
  4. Step 4: Simplify right side
    3,116.13x = 3,775,032.22
  5. Step 5: Solve for x
    x = 3,775,032.22/3,116.13
  6. Step 6: Final answer
    x = 1,211.45

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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.