Home / 9,660.45-13,330.74-5,410.78

Finding the Fourth Proportional to 9,660.45, 13,330.74 and 5,410.78

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Solution

The fourth proportional to 9,660.45, 13,330.74 and 5,410.78 is: 7,466.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,660.45 : 13,330.74 = 5,410.78 : x
  2. Step 2: Convert to fraction form
    9,660.45/13,330.74 = 5,410.78/x
  3. Step 3: Cross multiply
    9,660.45x = 13,330.74 × 5,410.78
  4. Step 4: Simplify right side
    9,660.45x = 72,129,701.38
  5. Step 5: Solve for x
    x = 72,129,701.38/9,660.45
  6. Step 6: Final answer
    x = 7,466.49

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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.