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Finding the Fourth Proportional to 8,346.30, 12,487.05 and 5,430.30

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Solution

The fourth proportional to 8,346.30, 12,487.05 and 5,430.30 is: 8,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,346.30 : 12,487.05 = 5,430.30 : x
  2. Step 2: Convert to fraction form
    8,346.30/12,487.05 = 5,430.30/x
  3. Step 3: Cross multiply
    8,346.30x = 12,487.05 × 5,430.30
  4. Step 4: Simplify right side
    8,346.30x = 67,808,427.62
  5. Step 5: Solve for x
    x = 67,808,427.62/8,346.30
  6. Step 6: Final answer
    x = 8,124.37

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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.