Home / 7,980.13-11,952.37-5,783.81

Finding the Fourth Proportional to 7,980.13, 11,952.37 and 5,783.81

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Solution

The fourth proportional to 7,980.13, 11,952.37 and 5,783.81 is: 8,662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.13 : 11,952.37 = 5,783.81 : x
  2. Step 2: Convert to fraction form
    7,980.13/11,952.37 = 5,783.81/x
  3. Step 3: Cross multiply
    7,980.13x = 11,952.37 × 5,783.81
  4. Step 4: Simplify right side
    7,980.13x = 69,130,252.55
  5. Step 5: Solve for x
    x = 69,130,252.55/7,980.13
  6. Step 6: Final answer
    x = 8,662.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.