Home / 7,135.05-9,847.71-4,781.28

Finding the Fourth Proportional to 7,135.05, 9,847.71 and 4,781.28

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Solution

The fourth proportional to 7,135.05, 9,847.71 and 4,781.28 is: 6,599.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.05 : 9,847.71 = 4,781.28 : x
  2. Step 2: Convert to fraction form
    7,135.05/9,847.71 = 4,781.28/x
  3. Step 3: Cross multiply
    7,135.05x = 9,847.71 × 4,781.28
  4. Step 4: Simplify right side
    7,135.05x = 47,084,658.87
  5. Step 5: Solve for x
    x = 47,084,658.87/7,135.05
  6. Step 6: Final answer
    x = 6,599.07

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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.