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Finding the Fourth Proportional to 6,621.51, 9,928.41 and 4,543.86

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Solution

The fourth proportional to 6,621.51, 9,928.41 and 4,543.86 is: 6,813.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.51 : 9,928.41 = 4,543.86 : x
  2. Step 2: Convert to fraction form
    6,621.51/9,928.41 = 4,543.86/x
  3. Step 3: Cross multiply
    6,621.51x = 9,928.41 × 4,543.86
  4. Step 4: Simplify right side
    6,621.51x = 45,113,305.06
  5. Step 5: Solve for x
    x = 45,113,305.06/6,621.51
  6. Step 6: Final answer
    x = 6,813.14

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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.