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Finding the Fourth Proportional to 6,418.99, 8,854.98 and 4,430.65

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Solution

The fourth proportional to 6,418.99, 8,854.98 and 4,430.65 is: 6,112.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.99 : 8,854.98 = 4,430.65 : x
  2. Step 2: Convert to fraction form
    6,418.99/8,854.98 = 4,430.65/x
  3. Step 3: Cross multiply
    6,418.99x = 8,854.98 × 4,430.65
  4. Step 4: Simplify right side
    6,418.99x = 39,233,317.14
  5. Step 5: Solve for x
    x = 39,233,317.14/6,418.99
  6. Step 6: Final answer
    x = 6,112.07

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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.