Home / 9,640.28-13,303.84-5,391.20

Finding the Fourth Proportional to 9,640.28, 13,303.84 and 5,391.20

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Solution

The fourth proportional to 9,640.28, 13,303.84 and 5,391.20 is: 7,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,640.28 : 13,303.84 = 5,391.20 : x
  2. Step 2: Convert to fraction form
    9,640.28/13,303.84 = 5,391.20/x
  3. Step 3: Cross multiply
    9,640.28x = 13,303.84 × 5,391.20
  4. Step 4: Simplify right side
    9,640.28x = 71,723,662.21
  5. Step 5: Solve for x
    x = 71,723,662.21/9,640.28
  6. Step 6: Final answer
    x = 7,440.00

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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.