Home / 7,619.20-11,397.18-7,152.64

Finding the Fourth Proportional to 7,619.20, 11,397.18 and 7,152.64

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Solution

The fourth proportional to 7,619.20, 11,397.18 and 7,152.64 is: 10,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.20 : 11,397.18 = 7,152.64 : x
  2. Step 2: Convert to fraction form
    7,619.20/11,397.18 = 7,152.64/x
  3. Step 3: Cross multiply
    7,619.20x = 11,397.18 × 7,152.64
  4. Step 4: Simplify right side
    7,619.20x = 81,519,925.56
  5. Step 5: Solve for x
    x = 81,519,925.56/7,619.20
  6. Step 6: Final answer
    x = 10,699.28

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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.