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Finding the Fourth Proportional to 4,979.79, 7,459.79 and 4,571.55

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Solution

The fourth proportional to 4,979.79, 7,459.79 and 4,571.55 is: 6,848.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.79 : 7,459.79 = 4,571.55 : x
  2. Step 2: Convert to fraction form
    4,979.79/7,459.79 = 4,571.55/x
  3. Step 3: Cross multiply
    4,979.79x = 7,459.79 × 4,571.55
  4. Step 4: Simplify right side
    4,979.79x = 34,102,780.12
  5. Step 5: Solve for x
    x = 34,102,780.12/4,979.79
  6. Step 6: Final answer
    x = 6,848.24

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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.