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Finding the Fourth Proportional to 4,891.28, 6,749.98 and 2,653.18

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Solution

The fourth proportional to 4,891.28, 6,749.98 and 2,653.18 is: 3,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.28 : 6,749.98 = 2,653.18 : x
  2. Step 2: Convert to fraction form
    4,891.28/6,749.98 = 2,653.18/x
  3. Step 3: Cross multiply
    4,891.28x = 6,749.98 × 2,653.18
  4. Step 4: Simplify right side
    4,891.28x = 17,908,911.94
  5. Step 5: Solve for x
    x = 17,908,911.94/4,891.28
  6. Step 6: Final answer
    x = 3,661.40

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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.