Home / 7,870.28-11,827.68-5,945.72

Finding the Fourth Proportional to 7,870.28, 11,827.68 and 5,945.72

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Solution

The fourth proportional to 7,870.28, 11,827.68 and 5,945.72 is: 8,935.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.28 : 11,827.68 = 5,945.72 : x
  2. Step 2: Convert to fraction form
    7,870.28/11,827.68 = 5,945.72/x
  3. Step 3: Cross multiply
    7,870.28x = 11,827.68 × 5,945.72
  4. Step 4: Simplify right side
    7,870.28x = 70,324,073.53
  5. Step 5: Solve for x
    x = 70,324,073.53/7,870.28
  6. Step 6: Final answer
    x = 8,935.40

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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.