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Finding the Fourth Proportional to 8,457.62, 12,743.50 and 7,009.03

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Solution

The fourth proportional to 8,457.62, 12,743.50 and 7,009.03 is: 10,560.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.62 : 12,743.50 = 7,009.03 : x
  2. Step 2: Convert to fraction form
    8,457.62/12,743.50 = 7,009.03/x
  3. Step 3: Cross multiply
    8,457.62x = 12,743.50 × 7,009.03
  4. Step 4: Simplify right side
    8,457.62x = 89,319,605.07
  5. Step 5: Solve for x
    x = 89,319,605.07/8,457.62
  6. Step 6: Final answer
    x = 10,560.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.