Home / 5,130.99-7,081.47-2,893.77

Finding the Fourth Proportional to 5,130.99, 7,081.47 and 2,893.77

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Solution

The fourth proportional to 5,130.99, 7,081.47 and 2,893.77 is: 3,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.99 : 7,081.47 = 2,893.77 : x
  2. Step 2: Convert to fraction form
    5,130.99/7,081.47 = 2,893.77/x
  3. Step 3: Cross multiply
    5,130.99x = 7,081.47 × 2,893.77
  4. Step 4: Simplify right side
    5,130.99x = 20,492,145.44
  5. Step 5: Solve for x
    x = 20,492,145.44/5,130.99
  6. Step 6: Final answer
    x = 3,993.80

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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.