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Finding the Fourth Proportional to 7,937.60, 11,907.72 and 2,742.08

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Solution

The fourth proportional to 7,937.60, 11,907.72 and 2,742.08 is: 4,113.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,937.60 : 11,907.72 = 2,742.08 : x
  2. Step 2: Convert to fraction form
    7,937.60/11,907.72 = 2,742.08/x
  3. Step 3: Cross multiply
    7,937.60x = 11,907.72 × 2,742.08
  4. Step 4: Simplify right side
    7,937.60x = 32,651,920.86
  5. Step 5: Solve for x
    x = 32,651,920.86/7,937.60
  6. Step 6: Final answer
    x = 4,113.58

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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.