Home / 5,215.89-7,197.93-2,858.07

Finding the Fourth Proportional to 5,215.89, 7,197.93 and 2,858.07

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Solution

The fourth proportional to 5,215.89, 7,197.93 and 2,858.07 is: 3,944.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.89 : 7,197.93 = 2,858.07 : x
  2. Step 2: Convert to fraction form
    5,215.89/7,197.93 = 2,858.07/x
  3. Step 3: Cross multiply
    5,215.89x = 7,197.93 × 2,858.07
  4. Step 4: Simplify right side
    5,215.89x = 20,572,187.80
  5. Step 5: Solve for x
    x = 20,572,187.80/5,215.89
  6. Step 6: Final answer
    x = 3,944.14

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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.