Home / 7,507.68-11,259.12-3,122.80

Finding the Fourth Proportional to 7,507.68, 11,259.12 and 3,122.80

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Solution

The fourth proportional to 7,507.68, 11,259.12 and 3,122.80 is: 4,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,507.68 : 11,259.12 = 3,122.80 : x
  2. Step 2: Convert to fraction form
    7,507.68/11,259.12 = 3,122.80/x
  3. Step 3: Cross multiply
    7,507.68x = 11,259.12 × 3,122.80
  4. Step 4: Simplify right side
    7,507.68x = 35,159,979.94
  5. Step 5: Solve for x
    x = 35,159,979.94/7,507.68
  6. Step 6: Final answer
    x = 4,683.20

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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.