Home / 7,321.12-10,102.08-4,176.16

Finding the Fourth Proportional to 7,321.12, 10,102.08 and 4,176.16

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Solution

The fourth proportional to 7,321.12, 10,102.08 and 4,176.16 is: 5,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.12 : 10,102.08 = 4,176.16 : x
  2. Step 2: Convert to fraction form
    7,321.12/10,102.08 = 4,176.16/x
  3. Step 3: Cross multiply
    7,321.12x = 10,102.08 × 4,176.16
  4. Step 4: Simplify right side
    7,321.12x = 42,187,902.41
  5. Step 5: Solve for x
    x = 42,187,902.41/7,321.12
  6. Step 6: Final answer
    x = 5,762.49

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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.