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Finding the Fourth Proportional to 6,445.95, 9,666.90 and 3,977.07

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Solution

The fourth proportional to 6,445.95, 9,666.90 and 3,977.07 is: 5,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.95 : 9,666.90 = 3,977.07 : x
  2. Step 2: Convert to fraction form
    6,445.95/9,666.90 = 3,977.07/x
  3. Step 3: Cross multiply
    6,445.95x = 9,666.90 × 3,977.07
  4. Step 4: Simplify right side
    6,445.95x = 38,445,937.98
  5. Step 5: Solve for x
    x = 38,445,937.98/6,445.95
  6. Step 6: Final answer
    x = 5,964.36

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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.