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Finding the Fourth Proportional to 5,756.40, 8,621.64 and 4,453.92

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Solution

The fourth proportional to 5,756.40, 8,621.64 and 4,453.92 is: 6,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,756.40 : 8,621.64 = 4,453.92 : x
  2. Step 2: Convert to fraction form
    5,756.40/8,621.64 = 4,453.92/x
  3. Step 3: Cross multiply
    5,756.40x = 8,621.64 × 4,453.92
  4. Step 4: Simplify right side
    5,756.40x = 38,400,094.83
  5. Step 5: Solve for x
    x = 38,400,094.83/5,756.40
  6. Step 6: Final answer
    x = 6,670.85

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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.