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Finding the Fourth Proportional to 7,474.66, 10,315.15 and 4,288.48

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Solution

The fourth proportional to 7,474.66, 10,315.15 and 4,288.48 is: 5,918.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,474.66 : 10,315.15 = 4,288.48 : x
  2. Step 2: Convert to fraction form
    7,474.66/10,315.15 = 4,288.48/x
  3. Step 3: Cross multiply
    7,474.66x = 10,315.15 × 4,288.48
  4. Step 4: Simplify right side
    7,474.66x = 44,236,277.96
  5. Step 5: Solve for x
    x = 44,236,277.96/7,474.66
  6. Step 6: Final answer
    x = 5,918.16

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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.