Home / 5,105.80-7,045.95-3,116.02

Finding the Fourth Proportional to 5,105.80, 7,045.95 and 3,116.02

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Solution

The fourth proportional to 5,105.80, 7,045.95 and 3,116.02 is: 4,300.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.80 : 7,045.95 = 3,116.02 : x
  2. Step 2: Convert to fraction form
    5,105.80/7,045.95 = 3,116.02/x
  3. Step 3: Cross multiply
    5,105.80x = 7,045.95 × 3,116.02
  4. Step 4: Simplify right side
    5,105.80x = 21,955,321.12
  5. Step 5: Solve for x
    x = 21,955,321.12/5,105.80
  6. Step 6: Final answer
    x = 4,300.07

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1.5x scale

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.