Home / 7,153.50-9,871.56-4,169.28

Finding the Fourth Proportional to 7,153.50, 9,871.56 and 4,169.28

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Solution

The fourth proportional to 7,153.50, 9,871.56 and 4,169.28 is: 5,753.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.50 : 9,871.56 = 4,169.28 : x
  2. Step 2: Convert to fraction form
    7,153.50/9,871.56 = 4,169.28/x
  3. Step 3: Cross multiply
    7,153.50x = 9,871.56 × 4,169.28
  4. Step 4: Simplify right side
    7,153.50x = 41,157,297.68
  5. Step 5: Solve for x
    x = 41,157,297.68/7,153.50
  6. Step 6: Final answer
    x = 5,753.45

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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.