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Finding the Fourth Proportional to 7,012.70, 9,719.32 and 6,881.48

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Solution

The fourth proportional to 7,012.70, 9,719.32 and 6,881.48 is: 9,537.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.70 : 9,719.32 = 6,881.48 : x
  2. Step 2: Convert to fraction form
    7,012.70/9,719.32 = 6,881.48/x
  3. Step 3: Cross multiply
    7,012.70x = 9,719.32 × 6,881.48
  4. Step 4: Simplify right side
    7,012.70x = 66,883,306.19
  5. Step 5: Solve for x
    x = 66,883,306.19/7,012.70
  6. Step 6: Final answer
    x = 9,537.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.