Home / 8,935.90-12,329.78-5,399.32

Finding the Fourth Proportional to 8,935.90, 12,329.78 and 5,399.32

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Solution

The fourth proportional to 8,935.90, 12,329.78 and 5,399.32 is: 7,450.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.90 : 12,329.78 = 5,399.32 : x
  2. Step 2: Convert to fraction form
    8,935.90/12,329.78 = 5,399.32/x
  3. Step 3: Cross multiply
    8,935.90x = 12,329.78 × 5,399.32
  4. Step 4: Simplify right side
    8,935.90x = 66,572,427.75
  5. Step 5: Solve for x
    x = 66,572,427.75/8,935.90
  6. Step 6: Final answer
    x = 7,450.00

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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.