Home / 5,243.36-7,235.78-2,885.45

Finding the Fourth Proportional to 5,243.36, 7,235.78 and 2,885.45

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Solution

The fourth proportional to 5,243.36, 7,235.78 and 2,885.45 is: 3,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.36 : 7,235.78 = 2,885.45 : x
  2. Step 2: Convert to fraction form
    5,243.36/7,235.78 = 2,885.45/x
  3. Step 3: Cross multiply
    5,243.36x = 7,235.78 × 2,885.45
  4. Step 4: Simplify right side
    5,243.36x = 20,878,430.79
  5. Step 5: Solve for x
    x = 20,878,430.79/5,243.36
  6. Step 6: Final answer
    x = 3,981.88

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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.