Home / 4,313.30-6,470.10-1,391.78

Finding the Fourth Proportional to 4,313.30, 6,470.10 and 1,391.78

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Solution

The fourth proportional to 4,313.30, 6,470.10 and 1,391.78 is: 2,087.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,313.30 : 6,470.10 = 1,391.78 : x
  2. Step 2: Convert to fraction form
    4,313.30/6,470.10 = 1,391.78/x
  3. Step 3: Cross multiply
    4,313.30x = 6,470.10 × 1,391.78
  4. Step 4: Simplify right side
    4,313.30x = 9,004,955.78
  5. Step 5: Solve for x
    x = 9,004,955.78/4,313.30
  6. Step 6: Final answer
    x = 2,087.72

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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.