Home / 7,887.90-11,815.75-4,916.62

Finding the Fourth Proportional to 7,887.90, 11,815.75 and 4,916.62

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Solution

The fourth proportional to 7,887.90, 11,815.75 and 4,916.62 is: 7,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.90 : 11,815.75 = 4,916.62 : x
  2. Step 2: Convert to fraction form
    7,887.90/11,815.75 = 4,916.62/x
  3. Step 3: Cross multiply
    7,887.90x = 11,815.75 × 4,916.62
  4. Step 4: Simplify right side
    7,887.90x = 58,093,552.77
  5. Step 5: Solve for x
    x = 58,093,552.77/7,887.90
  6. Step 6: Final answer
    x = 7,364.89

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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.