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Finding the Fourth Proportional to 5,347.40, 8,021.10 and 4,800.65

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Solution

The fourth proportional to 5,347.40, 8,021.10 and 4,800.65 is: 7,200.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.40 : 8,021.10 = 4,800.65 : x
  2. Step 2: Convert to fraction form
    5,347.40/8,021.10 = 4,800.65/x
  3. Step 3: Cross multiply
    5,347.40x = 8,021.10 × 4,800.65
  4. Step 4: Simplify right side
    5,347.40x = 38,506,493.72
  5. Step 5: Solve for x
    x = 38,506,493.72/5,347.40
  6. Step 6: Final answer
    x = 7,200.98

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Similar ratio
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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.