Home / 7,512.40-11,268.60-4,742.20

Finding the Fourth Proportional to 7,512.40, 11,268.60 and 4,742.20

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Solution

The fourth proportional to 7,512.40, 11,268.60 and 4,742.20 is: 7,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,512.40 : 11,268.60 = 4,742.20 : x
  2. Step 2: Convert to fraction form
    7,512.40/11,268.60 = 4,742.20/x
  3. Step 3: Cross multiply
    7,512.40x = 11,268.60 × 4,742.20
  4. Step 4: Simplify right side
    7,512.40x = 53,437,954.92
  5. Step 5: Solve for x
    x = 53,437,954.92/7,512.40
  6. Step 6: Final answer
    x = 7,113.30

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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.