Home / 5,120.79-7,681.16-4,425.35

Finding the Fourth Proportional to 5,120.79, 7,681.16 and 4,425.35

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Solution

The fourth proportional to 5,120.79, 7,681.16 and 4,425.35 is: 6,637.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.79 : 7,681.16 = 4,425.35 : x
  2. Step 2: Convert to fraction form
    5,120.79/7,681.16 = 4,425.35/x
  3. Step 3: Cross multiply
    5,120.79x = 7,681.16 × 4,425.35
  4. Step 4: Simplify right side
    5,120.79x = 33,991,760.87
  5. Step 5: Solve for x
    x = 33,991,760.87/5,120.79
  6. Step 6: Final answer
    x = 6,637.99

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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.