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Finding the Fourth Proportional to 6,651.99, 9,980.15 and 5,672.18

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Solution

The fourth proportional to 6,651.99, 9,980.15 and 5,672.18 is: 8,510.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.99 : 9,980.15 = 5,672.18 : x
  2. Step 2: Convert to fraction form
    6,651.99/9,980.15 = 5,672.18/x
  3. Step 3: Cross multiply
    6,651.99x = 9,980.15 × 5,672.18
  4. Step 4: Simplify right side
    6,651.99x = 56,609,203.82
  5. Step 5: Solve for x
    x = 56,609,203.82/6,651.99
  6. Step 6: Final answer
    x = 8,510.12

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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.