Home / 7,784.45-10,742.45-4,247.72

Finding the Fourth Proportional to 7,784.45, 10,742.45 and 4,247.72

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Solution

The fourth proportional to 7,784.45, 10,742.45 and 4,247.72 is: 5,861.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.45 : 10,742.45 = 4,247.72 : x
  2. Step 2: Convert to fraction form
    7,784.45/10,742.45 = 4,247.72/x
  3. Step 3: Cross multiply
    7,784.45x = 10,742.45 × 4,247.72
  4. Step 4: Simplify right side
    7,784.45x = 45,630,844.76
  5. Step 5: Solve for x
    x = 45,630,844.76/7,784.45
  6. Step 6: Final answer
    x = 5,861.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.