Home / 5,206.42-7,185-3,111.76

Finding the Fourth Proportional to 5,206.42, 7,185 and 3,111.76

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Solution

The fourth proportional to 5,206.42, 7,185 and 3,111.76 is: 4,294.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.42 : 7,185 = 3,111.76 : x
  2. Step 2: Convert to fraction form
    5,206.42/7,185 = 3,111.76/x
  3. Step 3: Cross multiply
    5,206.42x = 7,185 × 3,111.76
  4. Step 4: Simplify right side
    5,206.42x = 22,357,995.60
  5. Step 5: Solve for x
    x = 22,357,995.60/5,206.42
  6. Step 6: Final answer
    x = 4,294.31

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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.