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Finding the Fourth Proportional to 7,474.91, 10,315.28 and 4,331.39

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Solution

The fourth proportional to 7,474.91, 10,315.28 and 4,331.39 is: 5,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,474.91 : 10,315.28 = 4,331.39 : x
  2. Step 2: Convert to fraction form
    7,474.91/10,315.28 = 4,331.39/x
  3. Step 3: Cross multiply
    7,474.91x = 10,315.28 × 4,331.39
  4. Step 4: Simplify right side
    7,474.91x = 44,679,427.41
  5. Step 5: Solve for x
    x = 44,679,427.41/7,474.91
  6. Step 6: Final answer
    x = 5,977.26

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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.