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Finding the Fourth Proportional to 4,572.70, 6,859.05 and 3,420.70

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Solution

The fourth proportional to 4,572.70, 6,859.05 and 3,420.70 is: 5,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,572.70 : 6,859.05 = 3,420.70 : x
  2. Step 2: Convert to fraction form
    4,572.70/6,859.05 = 3,420.70/x
  3. Step 3: Cross multiply
    4,572.70x = 6,859.05 × 3,420.70
  4. Step 4: Simplify right side
    4,572.70x = 23,462,752.34
  5. Step 5: Solve for x
    x = 23,462,752.34/4,572.70
  6. Step 6: Final answer
    x = 5,131.05

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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.