Home / 7,621.48-11,426.75-3,459.40

Finding the Fourth Proportional to 7,621.48, 11,426.75 and 3,459.40

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Solution

The fourth proportional to 7,621.48, 11,426.75 and 3,459.40 is: 5,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.48 : 11,426.75 = 3,459.40 : x
  2. Step 2: Convert to fraction form
    7,621.48/11,426.75 = 3,459.40/x
  3. Step 3: Cross multiply
    7,621.48x = 11,426.75 × 3,459.40
  4. Step 4: Simplify right side
    7,621.48x = 39,529,698.95
  5. Step 5: Solve for x
    x = 39,529,698.95/7,621.48
  6. Step 6: Final answer
    x = 5,186.62

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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.