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Finding the Fourth Proportional to 7,049.10, 9,717.89 and 4,921.59

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Solution

The fourth proportional to 7,049.10, 9,717.89 and 4,921.59 is: 6,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,049.10 : 9,717.89 = 4,921.59 : x
  2. Step 2: Convert to fraction form
    7,049.10/9,717.89 = 4,921.59/x
  3. Step 3: Cross multiply
    7,049.10x = 9,717.89 × 4,921.59
  4. Step 4: Simplify right side
    7,049.10x = 47,827,445.64
  5. Step 5: Solve for x
    x = 47,827,445.64/7,049.10
  6. Step 6: Final answer
    x = 6,784.90

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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.