Home / 9,370.28-12,930.84-5,178.56

Finding the Fourth Proportional to 9,370.28, 12,930.84 and 5,178.56

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Solution

The fourth proportional to 9,370.28, 12,930.84 and 5,178.56 is: 7,146.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.28 : 12,930.84 = 5,178.56 : x
  2. Step 2: Convert to fraction form
    9,370.28/12,930.84 = 5,178.56/x
  3. Step 3: Cross multiply
    9,370.28x = 12,930.84 × 5,178.56
  4. Step 4: Simplify right side
    9,370.28x = 66,963,130.79
  5. Step 5: Solve for x
    x = 66,963,130.79/9,370.28
  6. Step 6: Final answer
    x = 7,146.33

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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.