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Finding the Fourth Proportional to 5,287.89, 7,935.49 and 5,246.89

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Solution

The fourth proportional to 5,287.89, 7,935.49 and 5,246.89 is: 7,873.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.89 : 7,935.49 = 5,246.89 : x
  2. Step 2: Convert to fraction form
    5,287.89/7,935.49 = 5,246.89/x
  3. Step 3: Cross multiply
    5,287.89x = 7,935.49 × 5,246.89
  4. Step 4: Simplify right side
    5,287.89x = 41,636,643.13
  5. Step 5: Solve for x
    x = 41,636,643.13/5,287.89
  6. Step 6: Final answer
    x = 7,873.96

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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.