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Finding the Fourth Proportional to 7,910.91, 10,916.70 and 4,551.42

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Solution

The fourth proportional to 7,910.91, 10,916.70 and 4,551.42 is: 6,280.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.91 : 10,916.70 = 4,551.42 : x
  2. Step 2: Convert to fraction form
    7,910.91/10,916.70 = 4,551.42/x
  3. Step 3: Cross multiply
    7,910.91x = 10,916.70 × 4,551.42
  4. Step 4: Simplify right side
    7,910.91x = 49,686,486.71
  5. Step 5: Solve for x
    x = 49,686,486.71/7,910.91
  6. Step 6: Final answer
    x = 6,280.75

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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.