Home / 5,239.12-7,858.14-3,285.40

Finding the Fourth Proportional to 5,239.12, 7,858.14 and 3,285.40

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Solution

The fourth proportional to 5,239.12, 7,858.14 and 3,285.40 is: 4,927.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.12 : 7,858.14 = 3,285.40 : x
  2. Step 2: Convert to fraction form
    5,239.12/7,858.14 = 3,285.40/x
  3. Step 3: Cross multiply
    5,239.12x = 7,858.14 × 3,285.40
  4. Step 4: Simplify right side
    5,239.12x = 25,817,133.16
  5. Step 5: Solve for x
    x = 25,817,133.16/5,239.12
  6. Step 6: Final answer
    x = 4,927.76

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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.