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Finding the Fourth Proportional to 8,245.79, 12,357.48 and 4,542.47

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Solution

The fourth proportional to 8,245.79, 12,357.48 and 4,542.47 is: 6,807.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.79 : 12,357.48 = 4,542.47 : x
  2. Step 2: Convert to fraction form
    8,245.79/12,357.48 = 4,542.47/x
  3. Step 3: Cross multiply
    8,245.79x = 12,357.48 × 4,542.47
  4. Step 4: Simplify right side
    8,245.79x = 56,133,482.18
  5. Step 5: Solve for x
    x = 56,133,482.18/8,245.79
  6. Step 6: Final answer
    x = 6,807.53

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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.