Home / 5,242.78-7,235.09-2,885.07

Finding the Fourth Proportional to 5,242.78, 7,235.09 and 2,885.07

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Solution

The fourth proportional to 5,242.78, 7,235.09 and 2,885.07 is: 3,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.78 : 7,235.09 = 2,885.07 : x
  2. Step 2: Convert to fraction form
    5,242.78/7,235.09 = 2,885.07/x
  3. Step 3: Cross multiply
    5,242.78x = 7,235.09 × 2,885.07
  4. Step 4: Simplify right side
    5,242.78x = 20,873,741.11
  5. Step 5: Solve for x
    x = 20,873,741.11/5,242.78
  6. Step 6: Final answer
    x = 3,981.43

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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.