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Finding the Fourth Proportional to 7,767.28, 11,652.28 and 2,840.16

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Solution

The fourth proportional to 7,767.28, 11,652.28 and 2,840.16 is: 4,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.28 : 11,652.28 = 2,840.16 : x
  2. Step 2: Convert to fraction form
    7,767.28/11,652.28 = 2,840.16/x
  3. Step 3: Cross multiply
    7,767.28x = 11,652.28 × 2,840.16
  4. Step 4: Simplify right side
    7,767.28x = 33,094,332.46
  5. Step 5: Solve for x
    x = 33,094,332.46/7,767.28
  6. Step 6: Final answer
    x = 4,260.74

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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.