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Finding the Fourth Proportional to 3,459.84, 5,185.50 and 1,509.76

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Solution

The fourth proportional to 3,459.84, 5,185.50 and 1,509.76 is: 2,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.84 : 5,185.50 = 1,509.76 : x
  2. Step 2: Convert to fraction form
    3,459.84/5,185.50 = 1,509.76/x
  3. Step 3: Cross multiply
    3,459.84x = 5,185.50 × 1,509.76
  4. Step 4: Simplify right side
    3,459.84x = 7,828,860.48
  5. Step 5: Solve for x
    x = 7,828,860.48/3,459.84
  6. Step 6: Final answer
    x = 2,262.78

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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.