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Finding the Fourth Proportional to 7,300.80, 10,072.80 and 6,494.40

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Solution

The fourth proportional to 7,300.80, 10,072.80 and 6,494.40 is: 8,960.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,300.80 : 10,072.80 = 6,494.40 : x
  2. Step 2: Convert to fraction form
    7,300.80/10,072.80 = 6,494.40/x
  3. Step 3: Cross multiply
    7,300.80x = 10,072.80 × 6,494.40
  4. Step 4: Simplify right side
    7,300.80x = 65,416,792.32
  5. Step 5: Solve for x
    x = 65,416,792.32/7,300.80
  6. Step 6: Final answer
    x = 8,960.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.