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Finding the Fourth Proportional to 6,762.65, 9,321.95 and 6,631.43

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Solution

The fourth proportional to 6,762.65, 9,321.95 and 6,631.43 is: 9,141.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.65 : 9,321.95 = 6,631.43 : x
  2. Step 2: Convert to fraction form
    6,762.65/9,321.95 = 6,631.43/x
  3. Step 3: Cross multiply
    6,762.65x = 9,321.95 × 6,631.43
  4. Step 4: Simplify right side
    6,762.65x = 61,817,828.86
  5. Step 5: Solve for x
    x = 61,817,828.86/6,762.65
  6. Step 6: Final answer
    x = 9,141.07

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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.