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Finding the Fourth Proportional to 6,448.68, 8,901.90 and 4,355.64

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Solution

The fourth proportional to 6,448.68, 8,901.90 and 4,355.64 is: 6,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448.68 : 8,901.90 = 4,355.64 : x
  2. Step 2: Convert to fraction form
    6,448.68/8,901.90 = 4,355.64/x
  3. Step 3: Cross multiply
    6,448.68x = 8,901.90 × 4,355.64
  4. Step 4: Simplify right side
    6,448.68x = 38,773,471.72
  5. Step 5: Solve for x
    x = 38,773,471.72/6,448.68
  6. Step 6: Final answer
    x = 6,012.62

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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.