Home / 5,157.99-7,122.77-4,881.78

Finding the Fourth Proportional to 5,157.99, 7,122.77 and 4,881.78

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Solution

The fourth proportional to 5,157.99, 7,122.77 and 4,881.78 is: 6,741.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.99 : 7,122.77 = 4,881.78 : x
  2. Step 2: Convert to fraction form
    5,157.99/7,122.77 = 4,881.78/x
  3. Step 3: Cross multiply
    5,157.99x = 7,122.77 × 4,881.78
  4. Step 4: Simplify right side
    5,157.99x = 34,771,796.13
  5. Step 5: Solve for x
    x = 34,771,796.13/5,157.99
  6. Step 6: Final answer
    x = 6,741.35

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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.