Home / 9,040.32-12,475.98-6,388.56

Finding the Fourth Proportional to 9,040.32, 12,475.98 and 6,388.56

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Solution

The fourth proportional to 9,040.32, 12,475.98 and 6,388.56 is: 8,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,040.32 : 12,475.98 = 6,388.56 : x
  2. Step 2: Convert to fraction form
    9,040.32/12,475.98 = 6,388.56/x
  3. Step 3: Cross multiply
    9,040.32x = 12,475.98 × 6,388.56
  4. Step 4: Simplify right side
    9,040.32x = 79,703,546.79
  5. Step 5: Solve for x
    x = 79,703,546.79/9,040.32
  6. Step 6: Final answer
    x = 8,816.45

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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.