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Finding the Fourth Proportional to 7,474.97, 10,315.13 and 4,285.99

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Solution

The fourth proportional to 7,474.97, 10,315.13 and 4,285.99 is: 5,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,474.97 : 10,315.13 = 4,285.99 : x
  2. Step 2: Convert to fraction form
    7,474.97/10,315.13 = 4,285.99/x
  3. Step 3: Cross multiply
    7,474.97x = 10,315.13 × 4,285.99
  4. Step 4: Simplify right side
    7,474.97x = 44,210,501.58
  5. Step 5: Solve for x
    x = 44,210,501.58/7,474.97
  6. Step 6: Final answer
    x = 5,914.47

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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.