Home / 3,509.79-5,271.99-2,784.45

Finding the Fourth Proportional to 3,509.79, 5,271.99 and 2,784.45

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Solution

The fourth proportional to 3,509.79, 5,271.99 and 2,784.45 is: 4,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.79 : 5,271.99 = 2,784.45 : x
  2. Step 2: Convert to fraction form
    3,509.79/5,271.99 = 2,784.45/x
  3. Step 3: Cross multiply
    3,509.79x = 5,271.99 × 2,784.45
  4. Step 4: Simplify right side
    3,509.79x = 14,679,592.56
  5. Step 5: Solve for x
    x = 14,679,592.56/3,509.79
  6. Step 6: Final answer
    x = 4,182.47

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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.