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Finding the Fourth Proportional to 7,217.79, 9,955.02 and 4,983.40

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Solution

The fourth proportional to 7,217.79, 9,955.02 and 4,983.40 is: 6,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,217.79 : 9,955.02 = 4,983.40 : x
  2. Step 2: Convert to fraction form
    7,217.79/9,955.02 = 4,983.40/x
  3. Step 3: Cross multiply
    7,217.79x = 9,955.02 × 4,983.40
  4. Step 4: Simplify right side
    7,217.79x = 49,609,846.67
  5. Step 5: Solve for x
    x = 49,609,846.67/7,217.79
  6. Step 6: Final answer
    x = 6,873.28

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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.