Home / 9,320.50-13,980.75-6,389.92

Finding the Fourth Proportional to 9,320.50, 13,980.75 and 6,389.92

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Solution

The fourth proportional to 9,320.50, 13,980.75 and 6,389.92 is: 9,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.50 : 13,980.75 = 6,389.92 : x
  2. Step 2: Convert to fraction form
    9,320.50/13,980.75 = 6,389.92/x
  3. Step 3: Cross multiply
    9,320.50x = 13,980.75 × 6,389.92
  4. Step 4: Simplify right side
    9,320.50x = 89,335,804.14
  5. Step 5: Solve for x
    x = 89,335,804.14/9,320.50
  6. Step 6: Final answer
    x = 9,584.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.