Home / 7,231.12-9,980.46-4,247.20

Finding the Fourth Proportional to 7,231.12, 9,980.46 and 4,247.20

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Solution

The fourth proportional to 7,231.12, 9,980.46 and 4,247.20 is: 5,862.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,231.12 : 9,980.46 = 4,247.20 : x
  2. Step 2: Convert to fraction form
    7,231.12/9,980.46 = 4,247.20/x
  3. Step 3: Cross multiply
    7,231.12x = 9,980.46 × 4,247.20
  4. Step 4: Simplify right side
    7,231.12x = 42,389,009.71
  5. Step 5: Solve for x
    x = 42,389,009.71/7,231.12
  6. Step 6: Final answer
    x = 5,862.03

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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.