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Finding the Fourth Proportional to 7,040.93, 9,705.42 and 4,678.97

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Solution

The fourth proportional to 7,040.93, 9,705.42 and 4,678.97 is: 6,449.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.93 : 9,705.42 = 4,678.97 : x
  2. Step 2: Convert to fraction form
    7,040.93/9,705.42 = 4,678.97/x
  3. Step 3: Cross multiply
    7,040.93x = 9,705.42 × 4,678.97
  4. Step 4: Simplify right side
    7,040.93x = 45,411,320.49
  5. Step 5: Solve for x
    x = 45,411,320.49/7,040.93
  6. Step 6: Final answer
    x = 6,449.62

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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.